Annotation of mandoc/roff.c, Revision 1.325
1.325 ! schwarze 1: /* $Id: roff.c,v 1.324 2017/07/14 17:16:16 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 ! schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.325 ! schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 50:
1.266 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.147 kristaps 53: /*
1.167 kristaps 54: * An incredibly-simple string buffer.
55: */
1.94 kristaps 56: struct roffstr {
1.167 kristaps 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
1.166 kristaps 59: };
60:
61: /*
1.167 kristaps 62: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.94 kristaps 68: };
69:
1.180 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.181 schwarze 75: int val;
1.180 schwarze 76: struct roffreg *next;
77: };
78:
1.295 schwarze 79: /*
80: * Association of request and macro names with token IDs.
81: */
82: struct roffreq {
83: enum roff_tok tok;
84: char name[];
85: };
86:
1.67 kristaps 87: struct roff {
1.128 kristaps 88: struct mparse *parse; /* parse point */
1.296 schwarze 89: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 90: struct roffnode *last; /* leaf of stack */
1.223 schwarze 91: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 92: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 93: struct roffreg *regtab; /* number registers */
1.166 kristaps 94: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 95: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 96: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
97: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 98: const char *current_string; /* value of last called user macro */
1.118 kristaps 99: struct tbl_node *first_tbl; /* first table parsed */
100: struct tbl_node *last_tbl; /* last table parsed */
101: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 102: struct eqn_node *last_eqn; /* equation parser */
103: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 104: int eqn_inline; /* current equation is inline */
1.223 schwarze 105: int options; /* parse options */
106: int rstacksz; /* current size limit of rstack */
107: int rstackpos; /* position in rstack */
1.227 schwarze 108: int format; /* current file in mdoc or man format */
1.273 schwarze 109: int argc; /* number of args of the last macro */
1.223 schwarze 110: char control; /* control character */
1.303 schwarze 111: char escape; /* escape character */
1.79 kristaps 112: };
113:
1.67 kristaps 114: struct roffnode {
1.294 schwarze 115: enum roff_tok tok; /* type of node */
1.67 kristaps 116: struct roffnode *parent; /* up one in stack */
117: int line; /* parse line */
118: int col; /* parse col */
1.106 kristaps 119: char *name; /* node name, e.g. macro name */
1.79 kristaps 120: char *end; /* end-rules: custom token */
121: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 122: int rule; /* current evaluation rule */
1.67 kristaps 123: };
124:
125: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 126: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 127: struct buf *buf, /* input buffer */ \
1.67 kristaps 128: int ln, /* parse line */ \
1.75 kristaps 129: int ppos, /* original pos in buffer */ \
130: int pos, /* current pos in buffer */ \
1.74 kristaps 131: int *offs /* reset offset of buffer data */
1.67 kristaps 132:
133: typedef enum rofferr (*roffproc)(ROFF_ARGS);
134:
135: struct roffmac {
1.79 kristaps 136: roffproc proc; /* process new macro */
137: roffproc text; /* process as child text of macro */
138: roffproc sub; /* process as child of macro */
139: int flags;
140: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 141: };
142:
1.141 kristaps 143: struct predef {
144: const char *name; /* predefined input name */
145: const char *str; /* replacement symbol */
146: };
147:
148: #define PREDEF(__name, __str) \
149: { (__name), (__str) },
150:
1.266 schwarze 151: /* --- function prototypes ------------------------------------------------ */
152:
1.155 kristaps 153: static void roffnode_cleanscope(struct roff *);
154: static void roffnode_pop(struct roff *);
1.294 schwarze 155: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 156: const char *, int, int);
1.321 schwarze 157: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.311 schwarze 158: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 159: static enum rofferr roff_block(ROFF_ARGS);
160: static enum rofferr roff_block_text(ROFF_ARGS);
161: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 162: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 163: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 164: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 165: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 166: static enum rofferr roff_cond(ROFF_ARGS);
167: static enum rofferr roff_cond_text(ROFF_ARGS);
168: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 169: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 170: static enum rofferr roff_ec(ROFF_ARGS);
171: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 172: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 173: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 174: static int roff_evalnum(struct roff *, int,
175: const char *, int *, int *, int);
176: static int roff_evalpar(struct roff *, int,
1.261 schwarze 177: const char *, int *, int *, int);
1.198 schwarze 178: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 179: static void roff_free1(struct roff *);
1.180 schwarze 180: static void roff_freereg(struct roffreg *);
1.167 kristaps 181: static void roff_freestr(struct roffkv *);
1.212 schwarze 182: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 183: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 184: static int roff_getop(const char *, int *, char *);
1.181 schwarze 185: static int roff_getregn(const struct roff *,
186: const char *, size_t);
1.273 schwarze 187: static int roff_getregro(const struct roff *,
188: const char *name);
1.325 ! schwarze 189: static const char *roff_getstrn(struct roff *,
1.315 schwarze 190: const char *, size_t, int *);
1.271 schwarze 191: static int roff_hasregn(const struct roff *,
192: const char *, size_t);
1.251 schwarze 193: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 194: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 195: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 196: static void roff_man_alloc1(struct roff_man *);
197: static void roff_man_free1(struct roff_man *);
1.300 schwarze 198: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 199: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 200: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 201: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 202: int, int);
1.305 schwarze 203: static enum rofferr roff_parsetext(struct roff *, struct buf *,
204: int, int *);
1.306 schwarze 205: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 206: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 207: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 208: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 209: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 210: static void roff_setstr(struct roff *,
1.106 kristaps 211: const char *, const char *, int);
1.207 schwarze 212: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 213: size_t, const char *, size_t, int);
1.105 kristaps 214: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 215: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 216: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 217: static enum rofferr roff_TE(ROFF_ARGS);
218: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 219: static enum rofferr roff_EQ(ROFF_ARGS);
220: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 221: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 222: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 223: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 224:
1.266 schwarze 225: /* --- constant data ------------------------------------------------------ */
226:
1.261 schwarze 227: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
228: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
229:
1.294 schwarze 230: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 231: "br", "ce", "ft", "ll",
1.312 schwarze 232: "mc", "po", "rj", "sp",
233: "ta", "ti", NULL,
1.294 schwarze 234: "ab", "ad", "af", "aln",
235: "als", "am", "am1", "ami",
236: "ami1", "as", "as1", "asciify",
237: "backtrace", "bd", "bleedat", "blm",
238: "box", "boxa", "bp", "BP",
239: "break", "breakchar", "brnl", "brp",
1.305 schwarze 240: "brpnl", "c2", "cc",
1.294 schwarze 241: "cf", "cflags", "ch", "char",
242: "chop", "class", "close", "CL",
243: "color", "composite", "continue", "cp",
244: "cropat", "cs", "cu", "da",
245: "dch", "Dd", "de", "de1",
246: "defcolor", "dei", "dei1", "device",
247: "devicem", "di", "do", "ds",
248: "ds1", "dwh", "dt", "ec",
249: "ecr", "ecs", "el", "em",
250: "EN", "eo", "EP", "EQ",
251: "errprint", "ev", "evc", "ex",
252: "fallback", "fam", "fc", "fchar",
253: "fcolor", "fdeferlig", "feature", "fkern",
254: "fl", "flig", "fp", "fps",
255: "fschar", "fspacewidth", "fspecial", "ftr",
256: "fzoom", "gcolor", "hc", "hcode",
257: "hidechar", "hla", "hlm", "hpf",
258: "hpfa", "hpfcode", "hw", "hy",
259: "hylang", "hylen", "hym", "hypp",
260: "hys", "ie", "if", "ig",
261: "index", "it", "itc", "IX",
262: "kern", "kernafter", "kernbefore", "kernpair",
263: "lc", "lc_ctype", "lds", "length",
264: "letadj", "lf", "lg", "lhang",
265: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 266: "ls", "lsm", "lt",
1.294 schwarze 267: "mediasize", "minss", "mk", "mso",
268: "na", "ne", "nh", "nhychar",
269: "nm", "nn", "nop", "nr",
270: "nrf", "nroff", "ns", "nx",
271: "open", "opena", "os", "output",
272: "padj", "papersize", "pc", "pev",
273: "pi", "PI", "pl", "pm",
1.312 schwarze 274: "pn", "pnr", "ps",
1.294 schwarze 275: "psbb", "pshape", "pso", "ptr",
276: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 277: "return", "rfschar", "rhang",
1.294 schwarze 278: "rm", "rn", "rnn", "rr",
279: "rs", "rt", "schar", "sentchar",
280: "shc", "shift", "sizes", "so",
281: "spacewidth", "special", "spreadwarn", "ss",
282: "sty", "substring", "sv", "sy",
1.300 schwarze 283: "T&", "tc", "TE",
1.301 schwarze 284: "TH", "tkf", "tl",
1.294 schwarze 285: "tm", "tm1", "tmc", "tr",
286: "track", "transchar", "trf", "trimat",
287: "trin", "trnt", "troff", "TS",
288: "uf", "ul", "unformat", "unwatch",
289: "unwatchn", "vpt", "vs", "warn",
290: "warnscale", "watch", "watchlength", "watchn",
291: "wh", "while", "write", "writec",
292: "writem", "xflag", ".", NULL,
1.306 schwarze 293: NULL, "text",
1.294 schwarze 294: "Dd", "Dt", "Os", "Sh",
295: "Ss", "Pp", "D1", "Dl",
296: "Bd", "Ed", "Bl", "El",
297: "It", "Ad", "An", "Ap",
298: "Ar", "Cd", "Cm", "Dv",
299: "Er", "Ev", "Ex", "Fa",
300: "Fd", "Fl", "Fn", "Ft",
301: "Ic", "In", "Li", "Nd",
302: "Nm", "Op", "Ot", "Pa",
303: "Rv", "St", "Va", "Vt",
304: "Xr", "%A", "%B", "%D",
305: "%I", "%J", "%N", "%O",
306: "%P", "%R", "%T", "%V",
307: "Ac", "Ao", "Aq", "At",
308: "Bc", "Bf", "Bo", "Bq",
309: "Bsx", "Bx", "Db", "Dc",
310: "Do", "Dq", "Ec", "Ef",
311: "Em", "Eo", "Fx", "Ms",
312: "No", "Ns", "Nx", "Ox",
313: "Pc", "Pf", "Po", "Pq",
314: "Qc", "Ql", "Qo", "Qq",
315: "Re", "Rs", "Sc", "So",
316: "Sq", "Sm", "Sx", "Sy",
317: "Tn", "Ux", "Xc", "Xo",
318: "Fo", "Fc", "Oo", "Oc",
319: "Bk", "Ek", "Bt", "Hf",
320: "Fr", "Ud", "Lb", "Lp",
321: "Lk", "Mt", "Brq", "Bro",
322: "Brc", "%C", "Es", "En",
1.299 schwarze 323: "Dx", "%Q", "%U", "Ta",
324: NULL,
1.294 schwarze 325: "TH", "SH", "SS", "TP",
326: "LP", "PP", "P", "IP",
327: "HP", "SM", "SB", "BI",
328: "IB", "BR", "RB", "R",
329: "B", "I", "IR", "RI",
1.299 schwarze 330: "nf", "fi",
1.294 schwarze 331: "RE", "RS", "DT", "UC",
1.297 schwarze 332: "PD", "AT", "in",
1.294 schwarze 333: "OP", "EX", "EE", "UR",
1.317 schwarze 334: "UE", "MT", "ME", NULL
1.294 schwarze 335: };
336: const char *const *roff_name = __roff_name;
337:
338: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 339: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 347: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 348: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 349: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 350: { roff_unsupp, NULL, NULL, 0 }, /* ab */
351: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
352: { roff_line_ignore, NULL, NULL, 0 }, /* af */
353: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 354: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
356: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
357: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
358: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
359: { roff_ds, NULL, NULL, 0 }, /* as */
360: { roff_ds, NULL, NULL, 0 }, /* as1 */
361: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
362: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
363: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
364: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
365: { roff_unsupp, NULL, NULL, 0 }, /* blm */
366: { roff_unsupp, NULL, NULL, 0 }, /* box */
367: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
368: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
369: { roff_unsupp, NULL, NULL, 0 }, /* BP */
370: { roff_unsupp, NULL, NULL, 0 }, /* break */
371: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
372: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 373: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 374: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
375: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
376: { roff_cc, NULL, NULL, 0 }, /* cc */
377: { roff_insec, NULL, NULL, 0 }, /* cf */
378: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
379: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
380: { roff_unsupp, NULL, NULL, 0 }, /* char */
381: { roff_unsupp, NULL, NULL, 0 }, /* chop */
382: { roff_line_ignore, NULL, NULL, 0 }, /* class */
383: { roff_insec, NULL, NULL, 0 }, /* close */
384: { roff_unsupp, NULL, NULL, 0 }, /* CL */
385: { roff_line_ignore, NULL, NULL, 0 }, /* color */
386: { roff_unsupp, NULL, NULL, 0 }, /* composite */
387: { roff_unsupp, NULL, NULL, 0 }, /* continue */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
389: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
390: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
391: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
392: { roff_unsupp, NULL, NULL, 0 }, /* da */
393: { roff_unsupp, NULL, NULL, 0 }, /* dch */
394: { roff_Dd, NULL, NULL, 0 }, /* Dd */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
397: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
400: { roff_unsupp, NULL, NULL, 0 }, /* device */
401: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
402: { roff_unsupp, NULL, NULL, 0 }, /* di */
403: { roff_unsupp, NULL, NULL, 0 }, /* do */
404: { roff_ds, NULL, NULL, 0 }, /* ds */
405: { roff_ds, NULL, NULL, 0 }, /* ds1 */
406: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
407: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 408: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 409: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
410: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
411: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
412: { roff_unsupp, NULL, NULL, 0 }, /* em */
413: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 414: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 415: { roff_unsupp, NULL, NULL, 0 }, /* EP */
416: { roff_EQ, NULL, NULL, 0 }, /* EQ */
417: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
418: { roff_unsupp, NULL, NULL, 0 }, /* ev */
419: { roff_unsupp, NULL, NULL, 0 }, /* evc */
420: { roff_unsupp, NULL, NULL, 0 }, /* ex */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
423: { roff_unsupp, NULL, NULL, 0 }, /* fc */
424: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
427: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
430: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
433: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
436: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
437: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
438: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
454: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
455: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
456: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
457: { roff_unsupp, NULL, NULL, 0 }, /* index */
458: { roff_it, NULL, NULL, 0 }, /* it */
459: { roff_unsupp, NULL, NULL, 0 }, /* itc */
460: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
462: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
463: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
464: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
465: { roff_unsupp, NULL, NULL, 0 }, /* lc */
466: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
467: { roff_unsupp, NULL, NULL, 0 }, /* lds */
468: { roff_unsupp, NULL, NULL, 0 }, /* length */
469: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
470: { roff_insec, NULL, NULL, 0 }, /* lf */
471: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
472: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
473: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
474: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
475: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
476: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
477: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
478: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
479: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
480: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
481: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
482: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
483: { roff_insec, NULL, NULL, 0 }, /* mso */
484: { roff_line_ignore, NULL, NULL, 0 }, /* na */
485: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
486: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
487: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
488: { roff_unsupp, NULL, NULL, 0 }, /* nm */
489: { roff_unsupp, NULL, NULL, 0 }, /* nn */
490: { roff_unsupp, NULL, NULL, 0 }, /* nop */
491: { roff_nr, NULL, NULL, 0 }, /* nr */
492: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
493: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
494: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
495: { roff_insec, NULL, NULL, 0 }, /* nx */
496: { roff_insec, NULL, NULL, 0 }, /* open */
497: { roff_insec, NULL, NULL, 0 }, /* opena */
498: { roff_line_ignore, NULL, NULL, 0 }, /* os */
499: { roff_unsupp, NULL, NULL, 0 }, /* output */
500: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
501: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
502: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
503: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
504: { roff_insec, NULL, NULL, 0 }, /* pi */
505: { roff_unsupp, NULL, NULL, 0 }, /* PI */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
510: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
511: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
512: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
513: { roff_insec, NULL, NULL, 0 }, /* pso */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
515: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
516: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
517: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
518: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
519: { roff_unsupp, NULL, NULL, 0 }, /* return */
520: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
521: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
522: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 523: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 524: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
525: { roff_rr, NULL, NULL, 0 }, /* rr */
526: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
527: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
528: { roff_unsupp, NULL, NULL, 0 }, /* schar */
529: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
530: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
531: { roff_unsupp, NULL, NULL, 0 }, /* shift */
532: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
533: { roff_so, NULL, NULL, 0 }, /* so */
534: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
535: { roff_line_ignore, NULL, NULL, 0 }, /* special */
536: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
537: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
538: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
539: { roff_unsupp, NULL, NULL, 0 }, /* substring */
540: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
541: { roff_insec, NULL, NULL, 0 }, /* sy */
542: { roff_T_, NULL, NULL, 0 }, /* T& */
543: { roff_unsupp, NULL, NULL, 0 }, /* tc */
544: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 545: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 546: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
547: { roff_unsupp, NULL, NULL, 0 }, /* tl */
548: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
549: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
550: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
551: { roff_tr, NULL, NULL, 0 }, /* tr */
552: { roff_line_ignore, NULL, NULL, 0 }, /* track */
553: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
554: { roff_insec, NULL, NULL, 0 }, /* trf */
555: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
556: { roff_unsupp, NULL, NULL, 0 }, /* trin */
557: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
558: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
559: { roff_TS, NULL, NULL, 0 }, /* TS */
560: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
561: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
562: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
563: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
564: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
565: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
566: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
567: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
568: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
569: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
570: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
571: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
572: { roff_unsupp, NULL, NULL, 0 }, /* wh */
573: { roff_unsupp, NULL, NULL, 0 }, /* while */
574: { roff_insec, NULL, NULL, 0 }, /* write */
575: { roff_insec, NULL, NULL, 0 }, /* writec */
576: { roff_insec, NULL, NULL, 0 }, /* writem */
577: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
578: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 579: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 580: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 581: };
582:
1.141 kristaps 583: /* Array of injected predefined strings. */
584: #define PREDEFS_MAX 38
585: static const struct predef predefs[PREDEFS_MAX] = {
586: #include "predefs.in"
587: };
588:
1.305 schwarze 589: static int roffce_lines; /* number of input lines to center */
590: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 591: static int roffit_lines; /* number of lines to delay */
592: static char *roffit_macro; /* nil-terminated macro line */
593:
1.207 schwarze 594:
1.266 schwarze 595: /* --- request table ------------------------------------------------------ */
596:
1.295 schwarze 597: struct ohash *
598: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 599: {
1.295 schwarze 600: struct ohash *htab;
601: struct roffreq *req;
602: enum roff_tok tok;
603: size_t sz;
604: unsigned int slot;
1.85 kristaps 605:
1.295 schwarze 606: htab = mandoc_malloc(sizeof(*htab));
607: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 608:
1.295 schwarze 609: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 610: if (roff_name[tok] == NULL)
611: continue;
1.295 schwarze 612: sz = strlen(roff_name[tok]);
613: req = mandoc_malloc(sizeof(*req) + sz + 1);
614: req->tok = tok;
615: memcpy(req->name, roff_name[tok], sz + 1);
616: slot = ohash_qlookup(htab, req->name);
617: ohash_insert(htab, slot, req);
1.85 kristaps 618: }
1.295 schwarze 619: return htab;
1.85 kristaps 620: }
621:
1.295 schwarze 622: void
623: roffhash_free(struct ohash *htab)
1.67 kristaps 624: {
1.295 schwarze 625: struct roffreq *req;
626: unsigned int slot;
1.67 kristaps 627:
1.295 schwarze 628: if (htab == NULL)
629: return;
630: for (req = ohash_first(htab, &slot); req != NULL;
631: req = ohash_next(htab, &slot))
632: free(req);
633: ohash_delete(htab);
634: free(htab);
635: }
636:
637: enum roff_tok
638: roffhash_find(struct ohash *htab, const char *name, size_t sz)
639: {
640: struct roffreq *req;
641: const char *end;
642:
643: if (sz) {
644: end = name + sz;
645: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
646: } else
647: req = ohash_find(htab, ohash_qlookup(htab, name));
648: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 649: }
650:
1.266 schwarze 651: /* --- stack of request blocks -------------------------------------------- */
652:
1.67 kristaps 653: /*
654: * Pop the current node off of the stack of roff instructions currently
655: * pending.
656: */
657: static void
658: roffnode_pop(struct roff *r)
659: {
660: struct roffnode *p;
661:
1.75 kristaps 662: assert(r->last);
1.207 schwarze 663: p = r->last;
1.82 kristaps 664:
1.75 kristaps 665: r->last = r->last->parent;
1.106 kristaps 666: free(p->name);
667: free(p->end);
1.67 kristaps 668: free(p);
669: }
670:
671: /*
672: * Push a roff node onto the instruction stack. This must later be
673: * removed with roffnode_pop().
674: */
1.98 schwarze 675: static void
1.294 schwarze 676: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 677: int line, int col)
1.67 kristaps 678: {
679: struct roffnode *p;
680:
1.98 schwarze 681: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 682: p->tok = tok;
1.106 kristaps 683: if (name)
684: p->name = mandoc_strdup(name);
1.67 kristaps 685: p->parent = r->last;
686: p->line = line;
687: p->col = col;
1.198 schwarze 688: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 689:
690: r->last = p;
691: }
692:
1.266 schwarze 693: /* --- roff parser state data management ---------------------------------- */
694:
1.67 kristaps 695: static void
696: roff_free1(struct roff *r)
697: {
1.176 schwarze 698: struct tbl_node *tbl;
1.167 kristaps 699: int i;
1.67 kristaps 700:
1.176 schwarze 701: while (NULL != (tbl = r->first_tbl)) {
702: r->first_tbl = tbl->next;
703: tbl_free(tbl);
1.109 kristaps 704: }
1.113 kristaps 705: r->first_tbl = r->last_tbl = r->tbl = NULL;
706:
1.319 schwarze 707: if (r->last_eqn != NULL)
708: eqn_free(r->last_eqn);
709: r->last_eqn = r->eqn = NULL;
1.125 kristaps 710:
1.67 kristaps 711: while (r->last)
712: roffnode_pop(r);
1.109 kristaps 713:
1.223 schwarze 714: free (r->rstack);
715: r->rstack = NULL;
716: r->rstacksz = 0;
717: r->rstackpos = -1;
718:
719: roff_freereg(r->regtab);
720: r->regtab = NULL;
721:
1.167 kristaps 722: roff_freestr(r->strtab);
1.306 schwarze 723: roff_freestr(r->rentab);
1.167 kristaps 724: roff_freestr(r->xmbtab);
1.306 schwarze 725: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 726:
727: if (r->xtab)
728: for (i = 0; i < 128; i++)
729: free(r->xtab[i].p);
730: free(r->xtab);
731: r->xtab = NULL;
1.67 kristaps 732: }
733:
734: void
735: roff_reset(struct roff *r)
736: {
737: roff_free1(r);
1.227 schwarze 738: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 739: r->control = '\0';
740: r->escape = '\\';
1.307 schwarze 741: roffce_lines = 0;
742: roffce_node = NULL;
743: roffit_lines = 0;
744: roffit_macro = NULL;
1.67 kristaps 745: }
746:
747: void
748: roff_free(struct roff *r)
749: {
750: roff_free1(r);
1.295 schwarze 751: roffhash_free(r->reqtab);
1.67 kristaps 752: free(r);
753: }
754:
755: struct roff *
1.279 schwarze 756: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 757: {
758: struct roff *r;
759:
1.98 schwarze 760: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 761: r->parse = parse;
1.295 schwarze 762: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 763: r->options = options;
1.227 schwarze 764: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 765: r->rstackpos = -1;
1.303 schwarze 766: r->escape = '\\';
1.277 schwarze 767: return r;
1.265 schwarze 768: }
769:
1.266 schwarze 770: /* --- syntax tree state data management ---------------------------------- */
771:
1.265 schwarze 772: static void
773: roff_man_free1(struct roff_man *man)
774: {
775:
1.266 schwarze 776: if (man->first != NULL)
777: roff_node_delete(man, man->first);
1.265 schwarze 778: free(man->meta.msec);
779: free(man->meta.vol);
780: free(man->meta.os);
781: free(man->meta.arch);
782: free(man->meta.title);
783: free(man->meta.name);
784: free(man->meta.date);
785: }
786:
787: static void
788: roff_man_alloc1(struct roff_man *man)
789: {
790:
791: memset(&man->meta, 0, sizeof(man->meta));
792: man->first = mandoc_calloc(1, sizeof(*man->first));
793: man->first->type = ROFFT_ROOT;
794: man->last = man->first;
795: man->last_es = NULL;
796: man->flags = 0;
797: man->macroset = MACROSET_NONE;
798: man->lastsec = man->lastnamed = SEC_NONE;
799: man->next = ROFF_NEXT_CHILD;
800: }
801:
802: void
803: roff_man_reset(struct roff_man *man)
804: {
805:
806: roff_man_free1(man);
807: roff_man_alloc1(man);
808: }
809:
810: void
811: roff_man_free(struct roff_man *man)
812: {
813:
814: roff_man_free1(man);
815: free(man);
816: }
817:
818: struct roff_man *
819: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 820: const char *os_s, int quick)
1.265 schwarze 821: {
822: struct roff_man *man;
823:
824: man = mandoc_calloc(1, sizeof(*man));
825: man->parse = parse;
826: man->roff = roff;
1.316 schwarze 827: man->os_s = os_s;
1.265 schwarze 828: man->quick = quick;
829: roff_man_alloc1(man);
1.296 schwarze 830: roff->man = man;
1.277 schwarze 831: return man;
1.67 kristaps 832: }
833:
1.266 schwarze 834: /* --- syntax tree handling ----------------------------------------------- */
835:
836: struct roff_node *
837: roff_node_alloc(struct roff_man *man, int line, int pos,
838: enum roff_type type, int tok)
839: {
840: struct roff_node *n;
841:
842: n = mandoc_calloc(1, sizeof(*n));
843: n->line = line;
844: n->pos = pos;
845: n->tok = tok;
846: n->type = type;
847: n->sec = man->lastsec;
848:
849: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 850: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 851: else
1.285 schwarze 852: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 853: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 854: n->flags |= NODE_LINE;
1.266 schwarze 855: man->flags &= ~MDOC_NEWLINE;
856:
1.277 schwarze 857: return n;
1.266 schwarze 858: }
859:
860: void
861: roff_node_append(struct roff_man *man, struct roff_node *n)
862: {
863:
864: switch (man->next) {
865: case ROFF_NEXT_SIBLING:
1.281 schwarze 866: if (man->last->next != NULL) {
867: n->next = man->last->next;
868: man->last->next->prev = n;
869: } else
870: man->last->parent->last = n;
1.266 schwarze 871: man->last->next = n;
872: n->prev = man->last;
873: n->parent = man->last->parent;
874: break;
875: case ROFF_NEXT_CHILD:
1.287 schwarze 876: if (man->last->child != NULL) {
877: n->next = man->last->child;
878: man->last->child->prev = n;
879: } else
880: man->last->last = n;
1.266 schwarze 881: man->last->child = n;
882: n->parent = man->last;
883: break;
884: default:
885: abort();
886: }
1.282 schwarze 887: man->last = n;
1.266 schwarze 888:
889: switch (n->type) {
890: case ROFFT_HEAD:
891: n->parent->head = n;
892: break;
893: case ROFFT_BODY:
1.282 schwarze 894: if (n->end != ENDBODY_NOT)
895: return;
1.266 schwarze 896: n->parent->body = n;
897: break;
898: case ROFFT_TAIL:
899: n->parent->tail = n;
900: break;
901: default:
1.282 schwarze 902: return;
1.266 schwarze 903: }
1.282 schwarze 904:
905: /*
906: * Copy over the normalised-data pointer of our parent. Not
907: * everybody has one, but copying a null pointer is fine.
908: */
909:
910: n->norm = n->parent->norm;
911: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 912: }
913:
1.267 schwarze 914: void
915: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
916: {
917: struct roff_node *n;
918:
919: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
920: n->string = roff_strdup(man->roff, word);
921: roff_node_append(man, n);
1.286 schwarze 922: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 923: man->next = ROFF_NEXT_SIBLING;
924: }
925:
926: void
927: roff_word_append(struct roff_man *man, const char *word)
928: {
929: struct roff_node *n;
930: char *addstr, *newstr;
931:
932: n = man->last;
933: addstr = roff_strdup(man->roff, word);
934: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
935: free(addstr);
936: free(n->string);
937: n->string = newstr;
938: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 939: }
940:
941: void
942: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
943: {
944: struct roff_node *n;
945:
946: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
947: roff_node_append(man, n);
948: man->next = ROFF_NEXT_CHILD;
949: }
950:
951: struct roff_node *
952: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
953: {
954: struct roff_node *n;
955:
956: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
957: roff_node_append(man, n);
958: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 959: return n;
1.267 schwarze 960: }
961:
1.266 schwarze 962: struct roff_node *
963: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
964: {
965: struct roff_node *n;
966:
967: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
968: roff_node_append(man, n);
969: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 970: return n;
1.266 schwarze 971: }
972:
973: struct roff_node *
974: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
975: {
976: struct roff_node *n;
977:
978: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
979: roff_node_append(man, n);
980: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 981: return n;
1.267 schwarze 982: }
983:
1.321 schwarze 984: static void
985: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 986: {
987: struct roff_node *n;
1.321 schwarze 988: const struct tbl_span *span;
1.267 schwarze 989:
990: if (man->macroset == MACROSET_MAN)
1.302 schwarze 991: man_breakscope(man, ROFF_TS);
1.321 schwarze 992: while ((span = tbl_span(tbl)) != NULL) {
993: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
994: n->span = span;
995: roff_node_append(man, n);
996: n->flags |= NODE_VALID | NODE_ENDED;
997: man->next = ROFF_NEXT_SIBLING;
998: }
1.266 schwarze 999: }
1000:
1001: void
1002: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1003: {
1004:
1005: /* Adjust siblings. */
1006:
1007: if (n->prev)
1008: n->prev->next = n->next;
1009: if (n->next)
1010: n->next->prev = n->prev;
1011:
1012: /* Adjust parent. */
1013:
1014: if (n->parent != NULL) {
1015: if (n->parent->child == n)
1016: n->parent->child = n->next;
1017: if (n->parent->last == n)
1018: n->parent->last = n->prev;
1019: }
1020:
1021: /* Adjust parse point. */
1022:
1023: if (man == NULL)
1024: return;
1025: if (man->last == n) {
1026: if (n->prev == NULL) {
1027: man->last = n->parent;
1028: man->next = ROFF_NEXT_CHILD;
1029: } else {
1030: man->last = n->prev;
1031: man->next = ROFF_NEXT_SIBLING;
1032: }
1033: }
1034: if (man->first == n)
1035: man->first = NULL;
1036: }
1037:
1038: void
1039: roff_node_free(struct roff_node *n)
1040: {
1041:
1042: if (n->args != NULL)
1043: mdoc_argv_free(n->args);
1044: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1045: free(n->norm);
1.319 schwarze 1046: if (n->eqn != NULL)
1047: eqn_box_free(n->eqn);
1.266 schwarze 1048: free(n->string);
1049: free(n);
1050: }
1051:
1052: void
1053: roff_node_delete(struct roff_man *man, struct roff_node *n)
1054: {
1055:
1056: while (n->child != NULL)
1057: roff_node_delete(man, n->child);
1058: roff_node_unlink(man, n);
1059: roff_node_free(n);
1.269 schwarze 1060: }
1061:
1062: void
1063: deroff(char **dest, const struct roff_node *n)
1064: {
1065: char *cp;
1066: size_t sz;
1067:
1068: if (n->type != ROFFT_TEXT) {
1069: for (n = n->child; n != NULL; n = n->next)
1070: deroff(dest, n);
1071: return;
1072: }
1073:
1.288 schwarze 1074: /* Skip leading whitespace. */
1.269 schwarze 1075:
1.288 schwarze 1076: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1077: if (cp[0] == '\\' && cp[1] != '\0' &&
1078: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1079: cp++;
1.288 schwarze 1080: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1081: break;
1082: }
1083:
1.289 schwarze 1084: /* Skip trailing backslash. */
1085:
1086: sz = strlen(cp);
1.290 schwarze 1087: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1088: sz--;
1089:
1.269 schwarze 1090: /* Skip trailing whitespace. */
1091:
1.289 schwarze 1092: for (; sz; sz--)
1.269 schwarze 1093: if ( ! isspace((unsigned char)cp[sz-1]))
1094: break;
1095:
1096: /* Skip empty strings. */
1097:
1098: if (sz == 0)
1099: return;
1100:
1101: if (*dest == NULL) {
1102: *dest = mandoc_strndup(cp, sz);
1103: return;
1104: }
1105:
1106: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1107: free(*dest);
1108: *dest = cp;
1.266 schwarze 1109: }
1110:
1111: /* --- main functions of the roff parser ---------------------------------- */
1112:
1.94 kristaps 1113: /*
1.206 schwarze 1114: * In the current line, expand escape sequences that tend to get
1115: * used in numerical expressions and conditional requests.
1116: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1117: */
1.172 schwarze 1118: static enum rofferr
1.238 schwarze 1119: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1120: {
1.208 schwarze 1121: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1122: const char *start; /* start of the string to process */
1.209 schwarze 1123: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1124: const char *stnam; /* start of the name, after "[(*" */
1125: const char *cp; /* end of the name, e.g. before ']' */
1126: const char *res; /* the string to be substituted */
1.238 schwarze 1127: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1128: size_t maxl; /* expected length of the escape name */
1129: size_t naml; /* actual length of the escape name */
1.237 schwarze 1130: enum mandoc_esc esc; /* type of the escape sequence */
1131: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1132: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1133: int npos; /* position in numeric expression */
1.218 schwarze 1134: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1135: int done; /* no more input available */
1.315 schwarze 1136: int deftype; /* type of definition to paste */
1.323 schwarze 1137: int rcsid; /* kind of RCS id seen */
1.206 schwarze 1138: char term; /* character terminating the escape */
1.94 kristaps 1139:
1.303 schwarze 1140: /* Search forward for comments. */
1141:
1142: done = 0;
1143: start = buf->buf + pos;
1144: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1145: if (stesc[0] != r->escape || stesc[1] == '\0')
1146: continue;
1147: stesc++;
1148: if (*stesc != '"' && *stesc != '#')
1149: continue;
1.313 schwarze 1150:
1151: /* Comment found, look for RCS id. */
1152:
1.323 schwarze 1153: rcsid = 0;
1.313 schwarze 1154: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1155: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1156: cp += 8;
1157: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1158: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1159: cp += 7;
1160: }
1161: if (cp != NULL &&
1162: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1163: strchr(cp, '$') != NULL) {
1.323 schwarze 1164: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1165: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1166: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1167: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1168: }
1.313 schwarze 1169:
1170: /* Handle trailing whitespace. */
1171:
1.303 schwarze 1172: cp = strchr(stesc--, '\0') - 1;
1173: if (*cp == '\n') {
1174: done = 1;
1175: cp--;
1176: }
1177: if (*cp == ' ' || *cp == '\t')
1178: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1179: ln, cp - buf->buf, NULL);
1180: while (stesc > start && stesc[-1] == ' ')
1181: stesc--;
1182: *stesc = '\0';
1183: break;
1184: }
1185: if (stesc == start)
1186: return ROFF_CONT;
1187: stesc--;
1188:
1189: /* Notice the end of the input. */
1190:
1191: if (*stesc == '\n') {
1192: *stesc-- = '\0';
1193: done = 1;
1194: }
1195:
1.170 schwarze 1196: expand_count = 0;
1.303 schwarze 1197: while (stesc >= start) {
1.170 schwarze 1198:
1.205 schwarze 1199: /* Search backwards for the next backslash. */
1200:
1.303 schwarze 1201: if (*stesc != r->escape) {
1202: if (*stesc == '\\') {
1203: *stesc = '\0';
1204: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1205: buf->buf, stesc + 1) + 1;
1206: start = nbuf + pos;
1207: stesc = nbuf + (stesc - buf->buf);
1208: free(buf->buf);
1209: buf->buf = nbuf;
1210: }
1211: stesc--;
1.205 schwarze 1212: continue;
1.303 schwarze 1213: }
1.205 schwarze 1214:
1215: /* If it is escaped, skip it. */
1216:
1217: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1218: if (*cp != r->escape)
1.205 schwarze 1219: break;
1220:
1.238 schwarze 1221: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1222: while (stesc > cp)
1223: *stesc-- = '\\';
1.205 schwarze 1224: continue;
1.303 schwarze 1225: } else if (stesc[1] != '\0') {
1226: *stesc = '\\';
1227: } else {
1228: *stesc-- = '\0';
1229: if (done)
1230: continue;
1231: else
1232: return ROFF_APPEND;
1.205 schwarze 1233: }
1.108 schwarze 1234:
1.206 schwarze 1235: /* Decide whether to expand or to check only. */
1.108 schwarze 1236:
1.206 schwarze 1237: term = '\0';
1.205 schwarze 1238: cp = stesc + 1;
1.181 schwarze 1239: switch (*cp) {
1.207 schwarze 1240: case '*':
1.181 schwarze 1241: res = NULL;
1242: break;
1.207 schwarze 1243: case 'B':
1244: case 'w':
1.206 schwarze 1245: term = cp[1];
1246: /* FALLTHROUGH */
1.207 schwarze 1247: case 'n':
1.181 schwarze 1248: res = ubuf;
1249: break;
1250: default:
1.237 schwarze 1251: esc = mandoc_escape(&cp, &stnam, &inaml);
1252: if (esc == ESCAPE_ERROR ||
1253: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1254: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1255: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1256: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1257: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1258: stesc--;
1.205 schwarze 1259: continue;
1.152 kristaps 1260: }
1261:
1.205 schwarze 1262: if (EXPAND_LIMIT < ++expand_count) {
1263: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1264: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1265: return ROFF_IGN;
1.205 schwarze 1266: }
1.108 schwarze 1267:
1268: /*
1269: * The third character decides the length
1.181 schwarze 1270: * of the name of the string or register.
1.108 schwarze 1271: * Save a pointer to the name.
1272: */
1273:
1.238 schwarze 1274: if (term == '\0') {
1.206 schwarze 1275: switch (*++cp) {
1.207 schwarze 1276: case '\0':
1.206 schwarze 1277: maxl = 0;
1278: break;
1.207 schwarze 1279: case '(':
1.206 schwarze 1280: cp++;
1281: maxl = 2;
1282: break;
1.207 schwarze 1283: case '[':
1.206 schwarze 1284: cp++;
1285: term = ']';
1286: maxl = 0;
1287: break;
1288: default:
1289: maxl = 1;
1290: break;
1291: }
1292: } else {
1293: cp += 2;
1.94 kristaps 1294: maxl = 0;
1295: }
1.108 schwarze 1296: stnam = cp;
1.94 kristaps 1297:
1.108 schwarze 1298: /* Advance to the end of the name. */
1.94 kristaps 1299:
1.253 schwarze 1300: naml = 0;
1.218 schwarze 1301: arg_complete = 1;
1.253 schwarze 1302: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1303: if (*cp == '\0') {
1.219 schwarze 1304: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1305: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1306: arg_complete = 0;
1.206 schwarze 1307: break;
1.153 kristaps 1308: }
1.238 schwarze 1309: if (maxl == 0 && *cp == term) {
1.206 schwarze 1310: cp++;
1.253 schwarze 1311: break;
1312: }
1313: if (*cp++ != '\\' || stesc[1] != 'w') {
1314: naml++;
1315: continue;
1316: }
1317: switch (mandoc_escape(&cp, NULL, NULL)) {
1318: case ESCAPE_SPECIAL:
1319: case ESCAPE_UNICODE:
1320: case ESCAPE_NUMBERED:
1321: case ESCAPE_OVERSTRIKE:
1322: naml++;
1323: break;
1324: default:
1.94 kristaps 1325: break;
1.206 schwarze 1326: }
1.94 kristaps 1327: }
1328:
1.108 schwarze 1329: /*
1330: * Retrieve the replacement string; if it is
1331: * undefined, resume searching for escapes.
1332: */
1333:
1.206 schwarze 1334: switch (stesc[1]) {
1.207 schwarze 1335: case '*':
1.315 schwarze 1336: if (arg_complete) {
1337: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1338: res = roff_getstrn(r, stnam, naml, &deftype);
1339: }
1.206 schwarze 1340: break;
1.207 schwarze 1341: case 'B':
1.206 schwarze 1342: npos = 0;
1.218 schwarze 1343: ubuf[0] = arg_complete &&
1.261 schwarze 1344: roff_evalnum(r, ln, stnam, &npos,
1345: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1346: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1347: ubuf[1] = '\0';
1348: break;
1.207 schwarze 1349: case 'n':
1.218 schwarze 1350: if (arg_complete)
1351: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1352: roff_getregn(r, stnam, naml));
1353: else
1354: ubuf[0] = '\0';
1.206 schwarze 1355: break;
1.207 schwarze 1356: case 'w':
1.218 schwarze 1357: /* use even incomplete args */
1.208 schwarze 1358: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1359: 24 * (int)naml);
1360: break;
1361: }
1.94 kristaps 1362:
1.238 schwarze 1363: if (res == NULL) {
1.219 schwarze 1364: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1365: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1366: "%.*s", (int)naml, stnam);
1.142 kristaps 1367: res = "";
1.246 schwarze 1368: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1369: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1370: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1371: return ROFF_IGN;
1.94 kristaps 1372: }
1373:
1.108 schwarze 1374: /* Replace the escape sequence by the string. */
1375:
1.209 schwarze 1376: *stesc = '\0';
1.238 schwarze 1377: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1378: buf->buf, res, cp) + 1;
1.94 kristaps 1379:
1.205 schwarze 1380: /* Prepare for the next replacement. */
1.94 kristaps 1381:
1.205 schwarze 1382: start = nbuf + pos;
1.238 schwarze 1383: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1384: free(buf->buf);
1385: buf->buf = nbuf;
1.154 kristaps 1386: }
1.277 schwarze 1387: return ROFF_CONT;
1.154 kristaps 1388: }
1389:
1390: /*
1.275 schwarze 1391: * Process text streams.
1.154 kristaps 1392: */
1393: static enum rofferr
1.305 schwarze 1394: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1395: {
1396: size_t sz;
1397: const char *start;
1.178 schwarze 1398: char *p;
1399: int isz;
1.154 kristaps 1400: enum mandoc_esc esc;
1401:
1.275 schwarze 1402: /* Spring the input line trap. */
1403:
1404: if (roffit_lines == 1) {
1405: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1406: free(buf->buf);
1407: buf->buf = p;
1408: buf->sz = isz + 1;
1409: *offs = 0;
1410: free(roffit_macro);
1411: roffit_lines = 0;
1.277 schwarze 1412: return ROFF_REPARSE;
1.275 schwarze 1413: } else if (roffit_lines > 1)
1414: --roffit_lines;
1415:
1.305 schwarze 1416: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1417: if (roffce_lines < 1) {
1418: r->man->last = roffce_node;
1419: r->man->next = ROFF_NEXT_SIBLING;
1420: roffce_lines = 0;
1421: roffce_node = NULL;
1422: } else
1423: roffce_lines--;
1424: }
1425:
1.275 schwarze 1426: /* Convert all breakable hyphens into ASCII_HYPH. */
1427:
1.238 schwarze 1428: start = p = buf->buf + pos;
1.154 kristaps 1429:
1.238 schwarze 1430: while (*p != '\0') {
1.154 kristaps 1431: sz = strcspn(p, "-\\");
1432: p += sz;
1433:
1.238 schwarze 1434: if (*p == '\0')
1.159 kristaps 1435: break;
1436:
1.238 schwarze 1437: if (*p == '\\') {
1.154 kristaps 1438: /* Skip over escapes. */
1439: p++;
1.189 schwarze 1440: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1441: if (esc == ESCAPE_ERROR)
1.154 kristaps 1442: break;
1.264 schwarze 1443: while (*p == '-')
1444: p++;
1.155 kristaps 1445: continue;
1.159 kristaps 1446: } else if (p == start) {
1.158 kristaps 1447: p++;
1.155 kristaps 1448: continue;
1.158 kristaps 1449: }
1.155 kristaps 1450:
1.171 schwarze 1451: if (isalpha((unsigned char)p[-1]) &&
1452: isalpha((unsigned char)p[1]))
1.155 kristaps 1453: *p = ASCII_HYPH;
1454: p++;
1.94 kristaps 1455: }
1.277 schwarze 1456: return ROFF_CONT;
1.94 kristaps 1457: }
1458:
1.67 kristaps 1459: enum rofferr
1.238 schwarze 1460: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1461: {
1.294 schwarze 1462: enum roff_tok t;
1.109 kristaps 1463: enum rofferr e;
1.238 schwarze 1464: int pos; /* parse point */
1.243 schwarze 1465: int spos; /* saved parse point for messages */
1.238 schwarze 1466: int ppos; /* original offset in buf->buf */
1467: int ctl; /* macro line (boolean) */
1468:
1469: ppos = pos = *offs;
1.79 kristaps 1470:
1.230 schwarze 1471: /* Handle in-line equation delimiters. */
1472:
1.236 schwarze 1473: if (r->tbl == NULL &&
1474: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1475: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1476: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1477: if (e == ROFF_REPARSE)
1.277 schwarze 1478: return e;
1.230 schwarze 1479: assert(e == ROFF_CONT);
1480: }
1481:
1482: /* Expand some escape sequences. */
1.94 kristaps 1483:
1.238 schwarze 1484: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1485: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1486: return e;
1.238 schwarze 1487: assert(e == ROFF_CONT);
1.94 kristaps 1488:
1.238 schwarze 1489: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1490:
1.94 kristaps 1491: /*
1.79 kristaps 1492: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1493: * text through the macro's filter.
1494: * Equations process all content themselves.
1495: * Tables process almost all content themselves, but we want
1496: * to warn about macros before passing it there.
1.79 kristaps 1497: */
1.74 kristaps 1498:
1.252 schwarze 1499: if (r->last != NULL && ! ctl) {
1.78 kristaps 1500: t = r->last->tok;
1.238 schwarze 1501: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1502: if (e == ROFF_IGN)
1.277 schwarze 1503: return e;
1.294 schwarze 1504: assert(e == ROFF_CONT);
1.182 schwarze 1505: }
1.319 schwarze 1506: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1507: eqn_read(r->eqn, buf->buf + ppos);
1508: return ROFF_IGN;
1509: }
1.321 schwarze 1510: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1511: tbl_read(r->tbl, ln, buf->buf, ppos);
1512: roff_addtbl(r->man, r->tbl);
1513: return ROFF_IGN;
1514: }
1.252 schwarze 1515: if ( ! ctl)
1.305 schwarze 1516: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1517:
1518: /* Skip empty request lines. */
1519:
1.238 schwarze 1520: if (buf->buf[pos] == '"') {
1.228 schwarze 1521: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1522: ln, pos, NULL);
1.277 schwarze 1523: return ROFF_IGN;
1.238 schwarze 1524: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1525: return ROFF_IGN;
1.67 kristaps 1526:
1.79 kristaps 1527: /*
1528: * If a scope is open, go to the child handler for that macro,
1529: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1530: * Don't do so if an equation is open.
1.79 kristaps 1531: */
1.78 kristaps 1532:
1.79 kristaps 1533: if (r->last) {
1534: t = r->last->tok;
1.277 schwarze 1535: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1536: }
1.78 kristaps 1537:
1.243 schwarze 1538: /* No scope is open. This is a new request or macro. */
1539:
1540: spos = pos;
1541: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1542:
1543: /* Tables ignore most macros. */
1544:
1.308 schwarze 1545: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1546: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1547: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1548: ln, pos, buf->buf + spos);
1.308 schwarze 1549: if (t != TOKEN_NONE)
1.277 schwarze 1550: return ROFF_IGN;
1.257 schwarze 1551: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1552: pos++;
1.291 schwarze 1553: while (buf->buf[pos] == ' ')
1.257 schwarze 1554: pos++;
1.321 schwarze 1555: tbl_read(r->tbl, ln, buf->buf, pos);
1556: roff_addtbl(r->man, r->tbl);
1557: return ROFF_IGN;
1.243 schwarze 1558: }
1559:
1.305 schwarze 1560: /* For now, let high level macros abort .ce mode. */
1561:
1562: if (ctl && roffce_node != NULL &&
1.324 schwarze 1563: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1564: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1565: r->man->last = roffce_node;
1566: r->man->next = ROFF_NEXT_SIBLING;
1567: roffce_lines = 0;
1568: roffce_node = NULL;
1569: }
1570:
1.79 kristaps 1571: /*
1.243 schwarze 1572: * This is neither a roff request nor a user-defined macro.
1573: * Let the standard macro set parsers handle it.
1.79 kristaps 1574: */
1.67 kristaps 1575:
1.294 schwarze 1576: if (t == TOKEN_NONE)
1.277 schwarze 1577: return ROFF_CONT;
1.243 schwarze 1578:
1579: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1580:
1.296 schwarze 1581: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1582: }
1583:
1.117 kristaps 1584: void
1.74 kristaps 1585: roff_endparse(struct roff *r)
1586: {
1.321 schwarze 1587: if (r->last != NULL)
1.221 schwarze 1588: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1589: r->last->line, r->last->col,
1.295 schwarze 1590: roff_name[r->last->tok]);
1.117 kristaps 1591:
1.321 schwarze 1592: if (r->eqn != NULL) {
1.221 schwarze 1593: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1594: r->eqn->node->line, r->eqn->node->pos, "EQ");
1595: eqn_parse(r->eqn);
1596: r->eqn = NULL;
1.125 kristaps 1597: }
1598:
1.321 schwarze 1599: if (r->tbl != NULL) {
1.221 schwarze 1600: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1601: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1602: tbl_end(r->tbl);
1603: r->tbl = NULL;
1.117 kristaps 1604: }
1.67 kristaps 1605: }
1606:
1607: /*
1608: * Parse a roff node's type from the input buffer. This must be in the
1609: * form of ".foo xxx" in the usual way.
1610: */
1.294 schwarze 1611: static enum roff_tok
1.214 schwarze 1612: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1613: {
1.214 schwarze 1614: char *cp;
1.106 kristaps 1615: const char *mac;
1616: size_t maclen;
1.315 schwarze 1617: int deftype;
1.294 schwarze 1618: enum roff_tok t;
1.67 kristaps 1619:
1.214 schwarze 1620: cp = buf + *pos;
1621:
1622: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1623: return TOKEN_NONE;
1.67 kristaps 1624:
1.214 schwarze 1625: mac = cp;
1626: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1627:
1.315 schwarze 1628: deftype = ROFFDEF_USER | ROFFDEF_REN;
1629: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1630: switch (deftype) {
1631: case ROFFDEF_USER:
1632: t = ROFF_USERDEF;
1633: break;
1634: case ROFFDEF_REN:
1635: t = ROFF_RENAMED;
1636: break;
1637: default:
1638: t = roffhash_find(r->reqtab, mac, maclen);
1639: break;
1640: }
1.294 schwarze 1641: if (t != TOKEN_NONE)
1.214 schwarze 1642: *pos = cp - buf;
1.325 ! schwarze 1643: else if (deftype == ROFFDEF_UNDEF) {
! 1644: /* Using an undefined macro defines it to be empty. */
! 1645: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
! 1646: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
! 1647: }
1.277 schwarze 1648: return t;
1.67 kristaps 1649: }
1650:
1.266 schwarze 1651: /* --- handling of request blocks ----------------------------------------- */
1652:
1.67 kristaps 1653: static enum rofferr
1.76 kristaps 1654: roff_cblock(ROFF_ARGS)
1.67 kristaps 1655: {
1656:
1.79 kristaps 1657: /*
1658: * A block-close `..' should only be invoked as a child of an
1659: * ignore macro, otherwise raise a warning and just ignore it.
1660: */
1661:
1.238 schwarze 1662: if (r->last == NULL) {
1.221 schwarze 1663: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1664: ln, ppos, "..");
1.277 schwarze 1665: return ROFF_IGN;
1.76 kristaps 1666: }
1.67 kristaps 1667:
1.81 kristaps 1668: switch (r->last->tok) {
1.207 schwarze 1669: case ROFF_am:
1.220 schwarze 1670: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1671: case ROFF_ami:
1672: case ROFF_de:
1.108 schwarze 1673: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1674: case ROFF_dei:
1675: case ROFF_ig:
1.81 kristaps 1676: break;
1677: default:
1.221 schwarze 1678: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1679: ln, ppos, "..");
1.277 schwarze 1680: return ROFF_IGN;
1.76 kristaps 1681: }
1.67 kristaps 1682:
1.238 schwarze 1683: if (buf->buf[pos] != '\0')
1.217 schwarze 1684: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1685: ".. %s", buf->buf + pos);
1.71 kristaps 1686:
1687: roffnode_pop(r);
1.76 kristaps 1688: roffnode_cleanscope(r);
1.277 schwarze 1689: return ROFF_IGN;
1.71 kristaps 1690:
1.67 kristaps 1691: }
1692:
1.76 kristaps 1693: static void
1694: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1695: {
1696:
1.76 kristaps 1697: while (r->last) {
1.173 schwarze 1698: if (--r->last->endspan != 0)
1.76 kristaps 1699: break;
1700: roffnode_pop(r);
1701: }
1.67 kristaps 1702: }
1703:
1.195 schwarze 1704: static void
1705: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1706: {
1707:
1.76 kristaps 1708: if (NULL == r->last) {
1.221 schwarze 1709: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1710: ln, ppos, "\\}");
1.195 schwarze 1711: return;
1.76 kristaps 1712: }
1713:
1.82 kristaps 1714: switch (r->last->tok) {
1.207 schwarze 1715: case ROFF_el:
1716: case ROFF_ie:
1717: case ROFF_if:
1.82 kristaps 1718: break;
1719: default:
1.221 schwarze 1720: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1721: ln, ppos, "\\}");
1.195 schwarze 1722: return;
1.75 kristaps 1723: }
1724:
1.76 kristaps 1725: if (r->last->endspan > -1) {
1.221 schwarze 1726: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1727: ln, ppos, "\\}");
1.195 schwarze 1728: return;
1.76 kristaps 1729: }
1730:
1.75 kristaps 1731: roffnode_pop(r);
1.76 kristaps 1732: roffnode_cleanscope(r);
1.195 schwarze 1733: return;
1.76 kristaps 1734: }
1735:
1736: static enum rofferr
1.80 kristaps 1737: roff_block(ROFF_ARGS)
1.76 kristaps 1738: {
1.315 schwarze 1739: const char *name, *value;
1740: char *call, *cp, *iname, *rname;
1741: size_t csz, namesz, rsz;
1742: int deftype;
1.106 kristaps 1743:
1.220 schwarze 1744: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1745:
1.238 schwarze 1746: if (tok == ROFF_de1)
1.220 schwarze 1747: tok = ROFF_de;
1.251 schwarze 1748: else if (tok == ROFF_dei1)
1749: tok = ROFF_dei;
1.238 schwarze 1750: else if (tok == ROFF_am1)
1.220 schwarze 1751: tok = ROFF_am;
1.251 schwarze 1752: else if (tok == ROFF_ami1)
1753: tok = ROFF_ami;
1.220 schwarze 1754:
1755: /* Parse the macro name argument. */
1756:
1.238 schwarze 1757: cp = buf->buf + pos;
1758: if (tok == ROFF_ig) {
1.220 schwarze 1759: iname = NULL;
1760: namesz = 0;
1761: } else {
1762: iname = cp;
1763: namesz = roff_getname(r, &cp, ln, ppos);
1764: iname[namesz] = '\0';
1765: }
1.107 kristaps 1766:
1.220 schwarze 1767: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1768:
1.238 schwarze 1769: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1770: deftype = ROFFDEF_USER;
1771: name = roff_getstrn(r, iname, namesz, &deftype);
1772: if (name == NULL) {
1.220 schwarze 1773: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1774: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1775: "%.*s", (int)namesz, iname);
1776: namesz = 0;
1777: } else
1778: namesz = strlen(name);
1779: } else
1780: name = iname;
1.107 kristaps 1781:
1.238 schwarze 1782: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1783: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1784: ln, ppos, roff_name[tok]);
1.277 schwarze 1785: return ROFF_IGN;
1.220 schwarze 1786: }
1.80 kristaps 1787:
1.106 kristaps 1788: roffnode_push(r, tok, name, ln, ppos);
1789:
1790: /*
1791: * At the beginning of a `de' macro, clear the existing string
1792: * with the same name, if there is one. New content will be
1.193 schwarze 1793: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1794: */
1.107 kristaps 1795:
1.311 schwarze 1796: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1797: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1798: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1799: } else if (tok == ROFF_am || tok == ROFF_ami) {
1800: deftype = ROFFDEF_ANY;
1801: value = roff_getstrn(r, iname, namesz, &deftype);
1802: switch (deftype) { /* Before appending, ... */
1803: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1804: roff_setstrn(&r->strtab, name, namesz,
1805: value, strlen(value), 0);
1806: break;
1807: case ROFFDEF_REN: /* call original standard macro. */
1808: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1809: (int)strlen(value), value);
1810: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1811: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1812: free(call);
1813: break;
1814: case ROFFDEF_STD: /* rename and call standard macro. */
1815: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1816: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1817: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1818: (int)rsz, rname);
1819: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1820: free(call);
1821: free(rname);
1822: break;
1823: default:
1824: break;
1825: }
1.311 schwarze 1826: }
1.76 kristaps 1827:
1.238 schwarze 1828: if (*cp == '\0')
1.277 schwarze 1829: return ROFF_IGN;
1.78 kristaps 1830:
1.220 schwarze 1831: /* Get the custom end marker. */
1.107 kristaps 1832:
1.220 schwarze 1833: iname = cp;
1.213 schwarze 1834: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1835:
1836: /* Resolve the end marker if it is indirect. */
1837:
1.238 schwarze 1838: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1839: deftype = ROFFDEF_USER;
1840: name = roff_getstrn(r, iname, namesz, &deftype);
1841: if (name == NULL) {
1.220 schwarze 1842: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1843: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1844: "%.*s", (int)namesz, iname);
1845: namesz = 0;
1846: } else
1847: namesz = strlen(name);
1848: } else
1849: name = iname;
1850:
1.213 schwarze 1851: if (namesz)
1852: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1853:
1.238 schwarze 1854: if (*cp != '\0')
1.217 schwarze 1855: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1856: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1857:
1.277 schwarze 1858: return ROFF_IGN;
1.78 kristaps 1859: }
1860:
1861: static enum rofferr
1.80 kristaps 1862: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1863: {
1.294 schwarze 1864: enum roff_tok t;
1.79 kristaps 1865: int i, j;
1866:
1867: /*
1868: * First check whether a custom macro exists at this level. If
1869: * it does, then check against it. This is some of groff's
1870: * stranger behaviours. If we encountered a custom end-scope
1871: * tag and that tag also happens to be a "real" macro, then we
1872: * need to try interpreting it again as a real macro. If it's
1873: * not, then return ignore. Else continue.
1874: */
1875:
1876: if (r->last->end) {
1.130 kristaps 1877: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1878: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1879: break;
1880:
1.238 schwarze 1881: if (r->last->end[j] == '\0' &&
1882: (buf->buf[i] == '\0' ||
1883: buf->buf[i] == ' ' ||
1884: buf->buf[i] == '\t')) {
1.79 kristaps 1885: roffnode_pop(r);
1886: roffnode_cleanscope(r);
1887:
1.238 schwarze 1888: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1889: i++;
1890:
1891: pos = i;
1.238 schwarze 1892: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1893: TOKEN_NONE)
1.277 schwarze 1894: return ROFF_RERUN;
1895: return ROFF_IGN;
1.79 kristaps 1896: }
1897: }
1898:
1899: /*
1900: * If we have no custom end-query or lookup failed, then try
1901: * pulling it out of the hashtable.
1902: */
1903:
1.238 schwarze 1904: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1905:
1.238 schwarze 1906: if (t != ROFF_cblock) {
1907: if (tok != ROFF_ig)
1908: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1909: return ROFF_IGN;
1.106 kristaps 1910: }
1.79 kristaps 1911:
1.277 schwarze 1912: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1913: }
1914:
1915: static enum rofferr
1.80 kristaps 1916: roff_block_text(ROFF_ARGS)
1.78 kristaps 1917: {
1918:
1.238 schwarze 1919: if (tok != ROFF_ig)
1920: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1921:
1.277 schwarze 1922: return ROFF_IGN;
1.78 kristaps 1923: }
1924:
1925: static enum rofferr
1.82 kristaps 1926: roff_cond_sub(ROFF_ARGS)
1927: {
1.294 schwarze 1928: enum roff_tok t;
1.139 kristaps 1929: char *ep;
1.198 schwarze 1930: int rr;
1.82 kristaps 1931:
1932: rr = r->last->rule;
1.139 kristaps 1933: roffnode_cleanscope(r);
1.144 kristaps 1934:
1.196 schwarze 1935: /*
1936: * If `\}' occurs on a macro line without a preceding macro,
1937: * drop the line completely.
1938: */
1939:
1.238 schwarze 1940: ep = buf->buf + pos;
1941: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1942: rr = 0;
1.196 schwarze 1943:
1.177 schwarze 1944: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1945:
1.238 schwarze 1946: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 1947: switch (ep[1]) {
1948: case '}':
1949: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1950: roff_ccond(r, ln, ep - buf->buf);
1951: break;
1952: case '\0':
1953: ++ep;
1954: break;
1955: default:
1956: ep += 2;
1957: break;
1.197 schwarze 1958: }
1.177 schwarze 1959: }
1.318 schwarze 1960:
1961: /*
1962: * Fully handle known macros when they are structurally
1963: * required or when the conditional evaluated to true.
1964: */
1965:
1966: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1967: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1968: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1969: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1970: }
1971:
1972: static enum rofferr
1973: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1974: {
1.140 kristaps 1975: char *ep;
1.198 schwarze 1976: int rr;
1.82 kristaps 1977:
1978: rr = r->last->rule;
1.140 kristaps 1979: roffnode_cleanscope(r);
1.82 kristaps 1980:
1.238 schwarze 1981: ep = buf->buf + pos;
1982: while ((ep = strchr(ep, '\\')) != NULL) {
1983: if (*(++ep) == '}') {
1.197 schwarze 1984: *ep = '&';
1.238 schwarze 1985: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1986: }
1.247 schwarze 1987: if (*ep != '\0')
1988: ++ep;
1.78 kristaps 1989: }
1.277 schwarze 1990: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1991: }
1992:
1.266 schwarze 1993: /* --- handling of numeric and conditional expressions -------------------- */
1994:
1.204 schwarze 1995: /*
1996: * Parse a single signed integer number. Stop at the first non-digit.
1997: * If there is at least one digit, return success and advance the
1998: * parse point, else return failure and let the parse point unchanged.
1999: * Ignore overflows, treat them just like the C language.
2000: */
1.184 schwarze 2001: static int
1.261 schwarze 2002: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2003: {
1.261 schwarze 2004: int myres, scaled, n, p;
1.206 schwarze 2005:
2006: if (NULL == res)
2007: res = &myres;
1.184 schwarze 2008:
2009: p = *pos;
2010: n = v[p] == '-';
1.261 schwarze 2011: if (n || v[p] == '+')
1.184 schwarze 2012: p++;
2013:
1.261 schwarze 2014: if (flags & ROFFNUM_WHITE)
2015: while (isspace((unsigned char)v[p]))
2016: p++;
2017:
1.184 schwarze 2018: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2019: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2020: if (p == *pos + n)
2021: return 0;
2022:
2023: if (n)
2024: *res = -*res;
2025:
1.254 schwarze 2026: /* Each number may be followed by one optional scaling unit. */
2027:
2028: switch (v[p]) {
2029: case 'f':
1.261 schwarze 2030: scaled = *res * 65536;
1.254 schwarze 2031: break;
2032: case 'i':
1.261 schwarze 2033: scaled = *res * 240;
1.254 schwarze 2034: break;
2035: case 'c':
1.261 schwarze 2036: scaled = *res * 240 / 2.54;
1.254 schwarze 2037: break;
2038: case 'v':
2039: case 'P':
1.261 schwarze 2040: scaled = *res * 40;
1.254 schwarze 2041: break;
2042: case 'm':
2043: case 'n':
1.261 schwarze 2044: scaled = *res * 24;
1.254 schwarze 2045: break;
2046: case 'p':
1.261 schwarze 2047: scaled = *res * 10 / 3;
1.254 schwarze 2048: break;
2049: case 'u':
1.261 schwarze 2050: scaled = *res;
1.254 schwarze 2051: break;
2052: case 'M':
1.261 schwarze 2053: scaled = *res * 6 / 25;
1.254 schwarze 2054: break;
2055: default:
1.261 schwarze 2056: scaled = *res;
1.254 schwarze 2057: p--;
2058: break;
2059: }
1.261 schwarze 2060: if (flags & ROFFNUM_SCALE)
2061: *res = scaled;
1.254 schwarze 2062:
2063: *pos = p + 1;
1.277 schwarze 2064: return 1;
1.184 schwarze 2065: }
2066:
1.198 schwarze 2067: /*
2068: * Evaluate a string comparison condition.
2069: * The first character is the delimiter.
2070: * Succeed if the string up to its second occurrence
2071: * matches the string up to its third occurence.
2072: * Advance the cursor after the third occurrence
2073: * or lacking that, to the end of the line.
2074: */
2075: static int
2076: roff_evalstrcond(const char *v, int *pos)
2077: {
2078: const char *s1, *s2, *s3;
2079: int match;
2080:
2081: match = 0;
2082: s1 = v + *pos; /* initial delimiter */
2083: s2 = s1 + 1; /* for scanning the first string */
2084: s3 = strchr(s2, *s1); /* for scanning the second string */
2085:
2086: if (NULL == s3) /* found no middle delimiter */
2087: goto out;
2088:
2089: while ('\0' != *++s3) {
2090: if (*s2 != *s3) { /* mismatch */
2091: s3 = strchr(s3, *s1);
2092: break;
2093: }
2094: if (*s3 == *s1) { /* found the final delimiter */
2095: match = 1;
2096: break;
2097: }
2098: s2++;
2099: }
2100:
2101: out:
2102: if (NULL == s3)
2103: s3 = strchr(s2, '\0');
1.242 schwarze 2104: else if (*s3 != '\0')
1.198 schwarze 2105: s3++;
2106: *pos = s3 - v;
1.277 schwarze 2107: return match;
1.198 schwarze 2108: }
2109:
1.204 schwarze 2110: /*
2111: * Evaluate an optionally negated single character, numerical,
2112: * or string condition.
2113: */
1.198 schwarze 2114: static int
1.271 schwarze 2115: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2116: {
1.271 schwarze 2117: char *cp, *name;
2118: size_t sz;
1.315 schwarze 2119: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2120:
1.198 schwarze 2121: if ('!' == v[*pos]) {
2122: wanttrue = 0;
2123: (*pos)++;
2124: } else
2125: wanttrue = 1;
2126:
1.88 kristaps 2127: switch (v[*pos]) {
1.240 schwarze 2128: case '\0':
1.277 schwarze 2129: return 0;
1.207 schwarze 2130: case 'n':
2131: case 'o':
1.88 kristaps 2132: (*pos)++;
1.277 schwarze 2133: return wanttrue;
1.207 schwarze 2134: case 'c':
2135: case 'e':
2136: case 't':
1.239 schwarze 2137: case 'v':
1.88 kristaps 2138: (*pos)++;
1.277 schwarze 2139: return !wanttrue;
1.310 schwarze 2140: case 'd':
1.271 schwarze 2141: case 'r':
1.310 schwarze 2142: cp = v + *pos + 1;
2143: while (*cp == ' ')
2144: cp++;
2145: name = cp;
2146: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2147: if (sz == 0)
2148: istrue = 0;
2149: else if (v[*pos] == 'r')
2150: istrue = roff_hasregn(r, name, sz);
2151: else {
2152: deftype = ROFFDEF_ANY;
2153: roff_getstrn(r, name, sz, &deftype);
2154: istrue = !!deftype;
2155: }
1.271 schwarze 2156: *pos = cp - v;
1.310 schwarze 2157: return istrue == wanttrue;
1.88 kristaps 2158: default:
2159: break;
2160: }
2161:
1.241 schwarze 2162: savepos = *pos;
1.261 schwarze 2163: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2164: return (number > 0) == wanttrue;
1.241 schwarze 2165: else if (*pos == savepos)
1.277 schwarze 2166: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2167: else
1.277 schwarze 2168: return 0;
1.88 kristaps 2169: }
2170:
1.74 kristaps 2171: static enum rofferr
1.103 kristaps 2172: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2173: {
1.123 schwarze 2174:
1.277 schwarze 2175: return ROFF_IGN;
1.89 kristaps 2176: }
2177:
1.104 kristaps 2178: static enum rofferr
1.251 schwarze 2179: roff_insec(ROFF_ARGS)
2180: {
2181:
2182: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2183: ln, ppos, roff_name[tok]);
1.277 schwarze 2184: return ROFF_IGN;
1.251 schwarze 2185: }
2186:
2187: static enum rofferr
2188: roff_unsupp(ROFF_ARGS)
2189: {
2190:
2191: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2192: ln, ppos, roff_name[tok]);
1.277 schwarze 2193: return ROFF_IGN;
1.251 schwarze 2194: }
2195:
2196: static enum rofferr
1.82 kristaps 2197: roff_cond(ROFF_ARGS)
1.74 kristaps 2198: {
1.173 schwarze 2199:
2200: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2201:
1.207 schwarze 2202: /*
1.134 kristaps 2203: * An `.el' has no conditional body: it will consume the value
2204: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2205: * defaults to DENY.
1.134 kristaps 2206: *
2207: * If we're not an `el', however, then evaluate the conditional.
2208: */
1.133 kristaps 2209:
1.238 schwarze 2210: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2211: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2212: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2213:
1.134 kristaps 2214: /*
2215: * An if-else will put the NEGATION of the current evaluated
2216: * conditional into the stack of rules.
2217: */
2218:
1.238 schwarze 2219: if (tok == ROFF_ie) {
1.223 schwarze 2220: if (r->rstackpos + 1 == r->rstacksz) {
2221: r->rstacksz += 16;
2222: r->rstack = mandoc_reallocarray(r->rstack,
2223: r->rstacksz, sizeof(int));
1.134 kristaps 2224: }
1.198 schwarze 2225: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2226: }
1.88 kristaps 2227:
2228: /* If the parent has false as its rule, then so do we. */
2229:
1.198 schwarze 2230: if (r->last->parent && !r->last->parent->rule)
2231: r->last->rule = 0;
1.88 kristaps 2232:
2233: /*
1.173 schwarze 2234: * Determine scope.
2235: * If there is nothing on the line after the conditional,
2236: * not even whitespace, use next-line scope.
1.88 kristaps 2237: */
1.74 kristaps 2238:
1.238 schwarze 2239: if (buf->buf[pos] == '\0') {
1.173 schwarze 2240: r->last->endspan = 2;
2241: goto out;
2242: }
2243:
1.238 schwarze 2244: while (buf->buf[pos] == ' ')
1.173 schwarze 2245: pos++;
2246:
2247: /* An opening brace requests multiline scope. */
1.75 kristaps 2248:
1.238 schwarze 2249: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2250: r->last->endspan = -1;
2251: pos += 2;
1.272 schwarze 2252: while (buf->buf[pos] == ' ')
2253: pos++;
1.173 schwarze 2254: goto out;
1.207 schwarze 2255: }
1.74 kristaps 2256:
1.77 kristaps 2257: /*
1.173 schwarze 2258: * Anything else following the conditional causes
2259: * single-line scope. Warn if the scope contains
2260: * nothing but trailing whitespace.
1.77 kristaps 2261: */
2262:
1.238 schwarze 2263: if (buf->buf[pos] == '\0')
1.216 schwarze 2264: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2265: ln, ppos, roff_name[tok]);
1.77 kristaps 2266:
1.173 schwarze 2267: r->last->endspan = 1;
1.74 kristaps 2268:
1.173 schwarze 2269: out:
1.75 kristaps 2270: *offs = pos;
1.277 schwarze 2271: return ROFF_RERUN;
1.83 schwarze 2272: }
2273:
2274: static enum rofferr
1.92 schwarze 2275: roff_ds(ROFF_ARGS)
2276: {
1.212 schwarze 2277: char *string;
2278: const char *name;
2279: size_t namesz;
1.96 kristaps 2280:
1.251 schwarze 2281: /* Ignore groff compatibility mode for now. */
2282:
2283: if (tok == ROFF_ds1)
2284: tok = ROFF_ds;
2285: else if (tok == ROFF_as1)
2286: tok = ROFF_as;
2287:
1.96 kristaps 2288: /*
1.212 schwarze 2289: * The first word is the name of the string.
2290: * If it is empty or terminated by an escape sequence,
2291: * abort the `ds' request without defining anything.
1.96 kristaps 2292: */
1.92 schwarze 2293:
1.238 schwarze 2294: name = string = buf->buf + pos;
2295: if (*name == '\0')
1.277 schwarze 2296: return ROFF_IGN;
1.92 schwarze 2297:
1.212 schwarze 2298: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2299: if (name[namesz] == '\\')
1.277 schwarze 2300: return ROFF_IGN;
1.212 schwarze 2301:
2302: /* Read past the initial double-quote, if any. */
1.238 schwarze 2303: if (*string == '"')
1.92 schwarze 2304: string++;
2305:
1.96 kristaps 2306: /* The rest is the value. */
1.212 schwarze 2307: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2308: ROFF_as == tok);
1.311 schwarze 2309: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2310: return ROFF_IGN;
1.92 schwarze 2311: }
2312:
1.204 schwarze 2313: /*
2314: * Parse a single operator, one or two characters long.
2315: * If the operator is recognized, return success and advance the
2316: * parse point, else return failure and let the parse point unchanged.
2317: */
2318: static int
2319: roff_getop(const char *v, int *pos, char *res)
2320: {
2321:
2322: *res = v[*pos];
2323:
2324: switch (*res) {
1.207 schwarze 2325: case '+':
2326: case '-':
2327: case '*':
2328: case '/':
2329: case '%':
2330: case '&':
2331: case ':':
1.204 schwarze 2332: break;
2333: case '<':
2334: switch (v[*pos + 1]) {
1.207 schwarze 2335: case '=':
1.204 schwarze 2336: *res = 'l';
2337: (*pos)++;
2338: break;
1.207 schwarze 2339: case '>':
1.204 schwarze 2340: *res = '!';
2341: (*pos)++;
2342: break;
1.207 schwarze 2343: case '?':
1.204 schwarze 2344: *res = 'i';
2345: (*pos)++;
2346: break;
2347: default:
2348: break;
2349: }
2350: break;
2351: case '>':
2352: switch (v[*pos + 1]) {
1.207 schwarze 2353: case '=':
1.204 schwarze 2354: *res = 'g';
2355: (*pos)++;
2356: break;
1.207 schwarze 2357: case '?':
1.204 schwarze 2358: *res = 'a';
2359: (*pos)++;
2360: break;
2361: default:
2362: break;
2363: }
2364: break;
2365: case '=':
2366: if ('=' == v[*pos + 1])
2367: (*pos)++;
2368: break;
2369: default:
1.277 schwarze 2370: return 0;
1.204 schwarze 2371: }
2372: (*pos)++;
2373:
1.277 schwarze 2374: return *res;
1.204 schwarze 2375: }
2376:
2377: /*
2378: * Evaluate either a parenthesized numeric expression
2379: * or a single signed integer number.
2380: */
2381: static int
1.235 schwarze 2382: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2383: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2384: {
2385:
2386: if ('(' != v[*pos])
1.277 schwarze 2387: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2388:
2389: (*pos)++;
1.261 schwarze 2390: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2391: return 0;
1.204 schwarze 2392:
1.206 schwarze 2393: /*
2394: * Omission of the closing parenthesis
2395: * is an error in validation mode,
2396: * but ignored in evaluation mode.
2397: */
2398:
1.204 schwarze 2399: if (')' == v[*pos])
2400: (*pos)++;
1.206 schwarze 2401: else if (NULL == res)
1.277 schwarze 2402: return 0;
1.204 schwarze 2403:
1.277 schwarze 2404: return 1;
1.204 schwarze 2405: }
2406:
2407: /*
2408: * Evaluate a complete numeric expression.
2409: * Proceed left to right, there is no concept of precedence.
2410: */
2411: static int
1.235 schwarze 2412: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2413: int *pos, int *res, int flags)
1.204 schwarze 2414: {
2415: int mypos, operand2;
2416: char operator;
2417:
2418: if (NULL == pos) {
2419: mypos = 0;
2420: pos = &mypos;
2421: }
2422:
1.261 schwarze 2423: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2424: while (isspace((unsigned char)v[*pos]))
2425: (*pos)++;
2426:
1.261 schwarze 2427: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2428: return 0;
1.204 schwarze 2429:
2430: while (1) {
1.261 schwarze 2431: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2432: while (isspace((unsigned char)v[*pos]))
2433: (*pos)++;
2434:
2435: if ( ! roff_getop(v, pos, &operator))
2436: break;
2437:
1.261 schwarze 2438: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2439: while (isspace((unsigned char)v[*pos]))
2440: (*pos)++;
2441:
1.261 schwarze 2442: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2443: return 0;
1.204 schwarze 2444:
1.261 schwarze 2445: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2446: while (isspace((unsigned char)v[*pos]))
2447: (*pos)++;
1.206 schwarze 2448:
2449: if (NULL == res)
2450: continue;
1.204 schwarze 2451:
2452: switch (operator) {
1.207 schwarze 2453: case '+':
1.204 schwarze 2454: *res += operand2;
2455: break;
1.207 schwarze 2456: case '-':
1.204 schwarze 2457: *res -= operand2;
2458: break;
1.207 schwarze 2459: case '*':
1.204 schwarze 2460: *res *= operand2;
2461: break;
1.207 schwarze 2462: case '/':
1.244 schwarze 2463: if (operand2 == 0) {
1.235 schwarze 2464: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2465: r->parse, ln, *pos, v);
2466: *res = 0;
2467: break;
2468: }
1.204 schwarze 2469: *res /= operand2;
2470: break;
1.207 schwarze 2471: case '%':
1.244 schwarze 2472: if (operand2 == 0) {
2473: mandoc_msg(MANDOCERR_DIVZERO,
2474: r->parse, ln, *pos, v);
2475: *res = 0;
2476: break;
2477: }
1.204 schwarze 2478: *res %= operand2;
2479: break;
1.207 schwarze 2480: case '<':
1.204 schwarze 2481: *res = *res < operand2;
2482: break;
1.207 schwarze 2483: case '>':
1.204 schwarze 2484: *res = *res > operand2;
2485: break;
1.207 schwarze 2486: case 'l':
1.204 schwarze 2487: *res = *res <= operand2;
2488: break;
1.207 schwarze 2489: case 'g':
1.204 schwarze 2490: *res = *res >= operand2;
2491: break;
1.207 schwarze 2492: case '=':
1.204 schwarze 2493: *res = *res == operand2;
2494: break;
1.207 schwarze 2495: case '!':
1.204 schwarze 2496: *res = *res != operand2;
2497: break;
1.207 schwarze 2498: case '&':
1.204 schwarze 2499: *res = *res && operand2;
2500: break;
1.207 schwarze 2501: case ':':
1.204 schwarze 2502: *res = *res || operand2;
2503: break;
1.207 schwarze 2504: case 'i':
1.204 schwarze 2505: if (operand2 < *res)
2506: *res = operand2;
2507: break;
1.207 schwarze 2508: case 'a':
1.204 schwarze 2509: if (operand2 > *res)
2510: *res = operand2;
2511: break;
2512: default:
2513: abort();
2514: }
2515: }
1.277 schwarze 2516: return 1;
1.204 schwarze 2517: }
2518:
1.266 schwarze 2519: /* --- register management ------------------------------------------------ */
2520:
1.180 schwarze 2521: void
1.187 schwarze 2522: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2523: {
1.180 schwarze 2524: struct roffreg *reg;
2525:
2526: /* Search for an existing register with the same name. */
2527: reg = r->regtab;
2528:
2529: while (reg && strcmp(name, reg->key.p))
2530: reg = reg->next;
1.147 kristaps 2531:
1.180 schwarze 2532: if (NULL == reg) {
2533: /* Create a new register. */
2534: reg = mandoc_malloc(sizeof(struct roffreg));
2535: reg->key.p = mandoc_strdup(name);
2536: reg->key.sz = strlen(name);
1.187 schwarze 2537: reg->val = 0;
1.180 schwarze 2538: reg->next = r->regtab;
2539: r->regtab = reg;
2540: }
2541:
1.187 schwarze 2542: if ('+' == sign)
2543: reg->val += val;
2544: else if ('-' == sign)
2545: reg->val -= val;
2546: else
2547: reg->val = val;
1.147 kristaps 2548: }
2549:
1.192 schwarze 2550: /*
2551: * Handle some predefined read-only number registers.
2552: * For now, return -1 if the requested register is not predefined;
2553: * in case a predefined read-only register having the value -1
2554: * were to turn up, another special value would have to be chosen.
2555: */
2556: static int
1.273 schwarze 2557: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2558: {
2559:
2560: switch (*name) {
1.273 schwarze 2561: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2562: return r->argc;
1.207 schwarze 2563: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2564: return 0;
1.207 schwarze 2565: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2566: return 1;
1.207 schwarze 2567: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2568: return 24;
1.207 schwarze 2569: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2570: return 0;
1.207 schwarze 2571: case 'T': /* Some output device is always defined. */
1.277 schwarze 2572: return 1;
1.207 schwarze 2573: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2574: return 40;
1.192 schwarze 2575: default:
1.277 schwarze 2576: return -1;
1.192 schwarze 2577: }
2578: }
2579:
1.181 schwarze 2580: int
1.180 schwarze 2581: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2582: {
1.180 schwarze 2583: struct roffreg *reg;
1.192 schwarze 2584: int val;
2585:
2586: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2587: val = roff_getregro(r, name + 1);
1.192 schwarze 2588: if (-1 != val)
1.277 schwarze 2589: return val;
1.192 schwarze 2590: }
1.180 schwarze 2591:
2592: for (reg = r->regtab; reg; reg = reg->next)
2593: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2594: return reg->val;
1.181 schwarze 2595:
1.277 schwarze 2596: return 0;
1.181 schwarze 2597: }
2598:
2599: static int
2600: roff_getregn(const struct roff *r, const char *name, size_t len)
2601: {
2602: struct roffreg *reg;
1.192 schwarze 2603: int val;
2604:
2605: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2606: val = roff_getregro(r, name + 1);
1.192 schwarze 2607: if (-1 != val)
1.277 schwarze 2608: return val;
1.192 schwarze 2609: }
1.181 schwarze 2610:
2611: for (reg = r->regtab; reg; reg = reg->next)
2612: if (len == reg->key.sz &&
2613: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2614: return reg->val;
1.271 schwarze 2615:
1.277 schwarze 2616: return 0;
1.271 schwarze 2617: }
2618:
2619: static int
2620: roff_hasregn(const struct roff *r, const char *name, size_t len)
2621: {
2622: struct roffreg *reg;
2623: int val;
2624:
2625: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2626: val = roff_getregro(r, name + 1);
1.271 schwarze 2627: if (-1 != val)
1.277 schwarze 2628: return 1;
1.271 schwarze 2629: }
2630:
2631: for (reg = r->regtab; reg; reg = reg->next)
2632: if (len == reg->key.sz &&
2633: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2634: return 1;
1.147 kristaps 2635:
1.277 schwarze 2636: return 0;
1.147 kristaps 2637: }
2638:
1.180 schwarze 2639: static void
2640: roff_freereg(struct roffreg *reg)
1.147 kristaps 2641: {
1.180 schwarze 2642: struct roffreg *old_reg;
1.147 kristaps 2643:
1.180 schwarze 2644: while (NULL != reg) {
2645: free(reg->key.p);
2646: old_reg = reg;
2647: reg = reg->next;
2648: free(old_reg);
2649: }
1.147 kristaps 2650: }
1.92 schwarze 2651:
2652: static enum rofferr
1.89 kristaps 2653: roff_nr(ROFF_ARGS)
1.83 schwarze 2654: {
1.212 schwarze 2655: char *key, *val;
2656: size_t keysz;
1.138 kristaps 2657: int iv;
1.187 schwarze 2658: char sign;
1.89 kristaps 2659:
1.238 schwarze 2660: key = val = buf->buf + pos;
2661: if (*key == '\0')
1.277 schwarze 2662: return ROFF_IGN;
1.212 schwarze 2663:
2664: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2665: if (key[keysz] == '\\')
1.277 schwarze 2666: return ROFF_IGN;
1.212 schwarze 2667: key[keysz] = '\0';
1.89 kristaps 2668:
1.187 schwarze 2669: sign = *val;
1.238 schwarze 2670: if (sign == '+' || sign == '-')
1.187 schwarze 2671: val++;
2672:
1.261 schwarze 2673: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2674: roff_setreg(r, key, iv, sign);
1.109 kristaps 2675:
1.277 schwarze 2676: return ROFF_IGN;
1.203 schwarze 2677: }
2678:
2679: static enum rofferr
2680: roff_rr(ROFF_ARGS)
2681: {
2682: struct roffreg *reg, **prev;
1.212 schwarze 2683: char *name, *cp;
2684: size_t namesz;
1.203 schwarze 2685:
1.238 schwarze 2686: name = cp = buf->buf + pos;
2687: if (*name == '\0')
1.277 schwarze 2688: return ROFF_IGN;
1.212 schwarze 2689: namesz = roff_getname(r, &cp, ln, pos);
2690: name[namesz] = '\0';
1.203 schwarze 2691:
2692: prev = &r->regtab;
2693: while (1) {
2694: reg = *prev;
1.238 schwarze 2695: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2696: break;
2697: prev = ®->next;
2698: }
1.238 schwarze 2699: if (reg != NULL) {
1.203 schwarze 2700: *prev = reg->next;
2701: free(reg->key.p);
2702: free(reg);
2703: }
1.277 schwarze 2704: return ROFF_IGN;
1.122 schwarze 2705: }
2706:
1.266 schwarze 2707: /* --- handler functions for roff requests -------------------------------- */
2708:
1.122 schwarze 2709: static enum rofferr
2710: roff_rm(ROFF_ARGS)
2711: {
2712: const char *name;
2713: char *cp;
1.212 schwarze 2714: size_t namesz;
1.122 schwarze 2715:
1.238 schwarze 2716: cp = buf->buf + pos;
2717: while (*cp != '\0') {
1.212 schwarze 2718: name = cp;
1.238 schwarze 2719: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2720: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2721: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2722: if (name[namesz] == '\\')
1.212 schwarze 2723: break;
1.122 schwarze 2724: }
1.277 schwarze 2725: return ROFF_IGN;
1.178 schwarze 2726: }
2727:
2728: static enum rofferr
2729: roff_it(ROFF_ARGS)
2730: {
2731: int iv;
2732:
2733: /* Parse the number of lines. */
1.261 schwarze 2734:
2735: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2736: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2737: ln, ppos, buf->buf + 1);
1.277 schwarze 2738: return ROFF_IGN;
1.178 schwarze 2739: }
2740:
1.262 schwarze 2741: while (isspace((unsigned char)buf->buf[pos]))
2742: pos++;
2743:
2744: /*
2745: * Arm the input line trap.
2746: * Special-casing "an-trap" is an ugly workaround to cope
2747: * with DocBook stupidly fiddling with man(7) internals.
2748: */
1.261 schwarze 2749:
1.178 schwarze 2750: roffit_lines = iv;
1.262 schwarze 2751: roffit_macro = mandoc_strdup(iv != 1 ||
2752: strcmp(buf->buf + pos, "an-trap") ?
2753: buf->buf + pos : "br");
1.277 schwarze 2754: return ROFF_IGN;
1.175 schwarze 2755: }
2756:
2757: static enum rofferr
2758: roff_Dd(ROFF_ARGS)
2759: {
1.315 schwarze 2760: int mask;
2761: enum roff_tok t, te;
1.227 schwarze 2762:
1.315 schwarze 2763: switch (tok) {
2764: case ROFF_Dd:
2765: tok = MDOC_Dd;
2766: te = MDOC_MAX;
2767: if (r->format == 0)
2768: r->format = MPARSE_MDOC;
2769: mask = MPARSE_MDOC | MPARSE_QUICK;
2770: break;
2771: case ROFF_TH:
2772: tok = MAN_TH;
2773: te = MAN_MAX;
2774: if (r->format == 0)
2775: r->format = MPARSE_MAN;
2776: mask = MPARSE_QUICK;
2777: break;
2778: default:
2779: abort();
2780: }
2781: if ((r->options & mask) == 0)
2782: for (t = tok; t < te; t++)
2783: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2784: return ROFF_CONT;
1.109 kristaps 2785: }
2786:
2787: static enum rofferr
2788: roff_TE(ROFF_ARGS)
2789: {
1.321 schwarze 2790: if (r->tbl == NULL) {
1.221 schwarze 2791: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2792: ln, ppos, "TE");
1.321 schwarze 2793: return ROFF_IGN;
2794: }
2795: if (tbl_end(r->tbl) == 0) {
2796: r->tbl = NULL;
1.258 schwarze 2797: free(buf->buf);
2798: buf->buf = mandoc_strdup(".sp");
2799: buf->sz = 4;
1.277 schwarze 2800: return ROFF_REPARSE;
1.258 schwarze 2801: }
1.321 schwarze 2802: r->tbl = NULL;
1.277 schwarze 2803: return ROFF_IGN;
1.112 kristaps 2804: }
2805:
2806: static enum rofferr
2807: roff_T_(ROFF_ARGS)
2808: {
2809:
2810: if (NULL == r->tbl)
1.221 schwarze 2811: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2812: ln, ppos, "T&");
1.112 kristaps 2813: else
1.296 schwarze 2814: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2815:
1.277 schwarze 2816: return ROFF_IGN;
1.109 kristaps 2817: }
2818:
1.230 schwarze 2819: /*
2820: * Handle in-line equation delimiters.
2821: */
2822: static enum rofferr
1.238 schwarze 2823: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2824: {
1.233 schwarze 2825: char *cp1, *cp2;
2826: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2827:
1.230 schwarze 2828: /*
2829: * Outside equations, look for an opening delimiter.
2830: * If we are inside an equation, we already know it is
2831: * in-line, or this function wouldn't have been called;
2832: * so look for a closing delimiter.
2833: */
2834:
1.238 schwarze 2835: cp1 = buf->buf + pos;
1.230 schwarze 2836: cp2 = strchr(cp1, r->eqn == NULL ?
2837: r->last_eqn->odelim : r->last_eqn->cdelim);
2838: if (cp2 == NULL)
1.277 schwarze 2839: return ROFF_CONT;
1.230 schwarze 2840:
1.233 schwarze 2841: *cp2++ = '\0';
2842: bef_pr = bef_nl = aft_nl = aft_pr = "";
2843:
2844: /* Handle preceding text, protecting whitespace. */
2845:
1.238 schwarze 2846: if (*buf->buf != '\0') {
1.233 schwarze 2847: if (r->eqn == NULL)
2848: bef_pr = "\\&";
2849: bef_nl = "\n";
2850: }
2851:
2852: /*
2853: * Prepare replacing the delimiter with an equation macro
2854: * and drop leading white space from the equation.
2855: */
1.230 schwarze 2856:
1.233 schwarze 2857: if (r->eqn == NULL) {
2858: while (*cp2 == ' ')
2859: cp2++;
2860: mac = ".EQ";
2861: } else
2862: mac = ".EN";
2863:
2864: /* Handle following text, protecting whitespace. */
2865:
2866: if (*cp2 != '\0') {
2867: aft_nl = "\n";
2868: if (r->eqn != NULL)
2869: aft_pr = "\\&";
2870: }
2871:
2872: /* Do the actual replacement. */
2873:
1.238 schwarze 2874: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2875: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2876: free(buf->buf);
2877: buf->buf = cp1;
1.230 schwarze 2878:
2879: /* Toggle the in-line state of the eqn subsystem. */
2880:
2881: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2882: return ROFF_REPARSE;
1.151 kristaps 2883: }
2884:
1.235 schwarze 2885: static enum rofferr
2886: roff_EQ(ROFF_ARGS)
1.125 kristaps 2887: {
1.319 schwarze 2888: struct roff_node *n;
2889:
1.322 schwarze 2890: if (r->man->macroset == MACROSET_MAN)
2891: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 2892: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2893: if (ln > r->man->last->line)
2894: n->flags |= NODE_LINE;
2895: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2896: n->eqn->expectargs = UINT_MAX;
2897: roff_node_append(r->man, n);
2898: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 2899:
1.238 schwarze 2900: assert(r->eqn == NULL);
1.319 schwarze 2901: if (r->last_eqn == NULL)
2902: r->last_eqn = eqn_alloc(r->parse);
2903: else
2904: eqn_reset(r->last_eqn);
2905: r->eqn = r->last_eqn;
2906: r->eqn->node = n;
1.151 kristaps 2907:
1.238 schwarze 2908: if (buf->buf[pos] != '\0')
1.235 schwarze 2909: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2910: ".EQ %s", buf->buf + pos);
1.151 kristaps 2911:
1.277 schwarze 2912: return ROFF_IGN;
1.125 kristaps 2913: }
2914:
2915: static enum rofferr
2916: roff_EN(ROFF_ARGS)
2917: {
1.319 schwarze 2918: if (r->eqn != NULL) {
2919: eqn_parse(r->eqn);
2920: r->eqn = NULL;
2921: } else
2922: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2923: if (buf->buf[pos] != '\0')
2924: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2925: "EN %s", buf->buf + pos);
1.277 schwarze 2926: return ROFF_IGN;
1.125 kristaps 2927: }
2928:
2929: static enum rofferr
1.109 kristaps 2930: roff_TS(ROFF_ARGS)
2931: {
1.321 schwarze 2932: if (r->tbl != NULL) {
1.221 schwarze 2933: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2934: ln, ppos, "TS breaks TS");
1.321 schwarze 2935: tbl_end(r->tbl);
1.115 kristaps 2936: }
1.321 schwarze 2937: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2938: if (r->last_tbl)
1.321 schwarze 2939: r->last_tbl->next = r->tbl;
1.113 kristaps 2940: else
1.321 schwarze 2941: r->first_tbl = r->tbl;
2942: r->last_tbl = r->tbl;
1.297 schwarze 2943: return ROFF_IGN;
2944: }
2945:
2946: static enum rofferr
2947: roff_onearg(ROFF_ARGS)
2948: {
2949: struct roff_node *n;
2950: char *cp;
1.305 schwarze 2951: int npos;
1.297 schwarze 2952:
1.302 schwarze 2953: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 2954: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
2955: tok == ROFF_ti))
1.302 schwarze 2956: man_breakscope(r->man, tok);
2957:
1.309 schwarze 2958: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 2959: r->man->last = roffce_node;
2960: r->man->next = ROFF_NEXT_SIBLING;
2961: }
2962:
1.297 schwarze 2963: roff_elem_alloc(r->man, ln, ppos, tok);
2964: n = r->man->last;
2965:
2966: cp = buf->buf + pos;
2967: if (*cp != '\0') {
2968: while (*cp != '\0' && *cp != ' ')
2969: cp++;
2970: while (*cp == ' ')
2971: *cp++ = '\0';
2972: if (*cp != '\0')
2973: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2974: r->parse, ln, cp - buf->buf,
2975: "%s ... %s", roff_name[tok], cp);
2976: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2977: }
2978:
1.309 schwarze 2979: if (tok == ROFF_ce || tok == ROFF_rj) {
2980: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 2981: roff_word_alloc(r->man, ln, pos, "1");
2982: r->man->last->flags |= NODE_NOSRC;
2983: }
2984: npos = 0;
2985: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2986: &roffce_lines, 0) == 0) {
2987: mandoc_vmsg(MANDOCERR_CE_NONUM,
2988: r->parse, ln, pos, "ce %s", buf->buf + pos);
2989: roffce_lines = 1;
2990: }
2991: if (roffce_lines < 1) {
2992: r->man->last = r->man->last->parent;
2993: roffce_node = NULL;
2994: roffce_lines = 0;
2995: } else
2996: roffce_node = r->man->last->parent;
2997: } else {
2998: n->flags |= NODE_VALID | NODE_ENDED;
2999: r->man->last = n;
3000: }
3001: n->flags |= NODE_LINE;
1.300 schwarze 3002: r->man->next = ROFF_NEXT_SIBLING;
3003: return ROFF_IGN;
3004: }
3005:
3006: static enum rofferr
3007: roff_manyarg(ROFF_ARGS)
3008: {
3009: struct roff_node *n;
3010: char *sp, *ep;
3011:
3012: roff_elem_alloc(r->man, ln, ppos, tok);
3013: n = r->man->last;
3014:
3015: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3016: while (*ep != '\0' && *ep != ' ')
3017: ep++;
3018: while (*ep == ' ')
3019: *ep++ = '\0';
3020: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3021: }
3022:
3023: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3024: r->man->last = n;
3025: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3026: return ROFF_IGN;
1.251 schwarze 3027: }
3028:
3029: static enum rofferr
1.311 schwarze 3030: roff_als(ROFF_ARGS)
3031: {
3032: char *oldn, *newn, *end, *value;
3033: size_t oldsz, newsz, valsz;
3034:
3035: newn = oldn = buf->buf + pos;
3036: if (*newn == '\0')
3037: return ROFF_IGN;
3038:
3039: newsz = roff_getname(r, &oldn, ln, pos);
3040: if (newn[newsz] == '\\' || *oldn == '\0')
3041: return ROFF_IGN;
3042:
3043: end = oldn;
3044: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3045: if (oldsz == 0)
3046: return ROFF_IGN;
3047:
1.315 schwarze 3048: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3049: (int)oldsz, oldn);
1.311 schwarze 3050: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3051: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3052: free(value);
3053: return ROFF_IGN;
3054: }
3055:
3056: static enum rofferr
1.296 schwarze 3057: roff_br(ROFF_ARGS)
1.251 schwarze 3058: {
1.302 schwarze 3059: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3060: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3061: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3062: if (buf->buf[pos] != '\0')
3063: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3064: "%s %s", roff_name[tok], buf->buf + pos);
3065: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3066: r->man->next = ROFF_NEXT_SIBLING;
3067: return ROFF_IGN;
1.92 schwarze 3068: }
3069:
1.105 kristaps 3070: static enum rofferr
1.174 kristaps 3071: roff_cc(ROFF_ARGS)
3072: {
3073: const char *p;
3074:
1.238 schwarze 3075: p = buf->buf + pos;
1.174 kristaps 3076:
1.238 schwarze 3077: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3078: r->control = '\0';
1.174 kristaps 3079:
1.238 schwarze 3080: if (*p != '\0')
1.260 schwarze 3081: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3082: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3083:
1.277 schwarze 3084: return ROFF_IGN;
1.174 kristaps 3085: }
3086:
3087: static enum rofferr
1.303 schwarze 3088: roff_ec(ROFF_ARGS)
3089: {
3090: const char *p;
3091:
3092: p = buf->buf + pos;
3093: if (*p == '\0')
3094: r->escape = '\\';
3095: else {
3096: r->escape = *p;
3097: if (*++p != '\0')
3098: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3099: ln, p - buf->buf, "ec ... %s", p);
3100: }
3101: return ROFF_IGN;
3102: }
3103:
3104: static enum rofferr
3105: roff_eo(ROFF_ARGS)
3106: {
3107: r->escape = '\0';
3108: if (buf->buf[pos] != '\0')
3109: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3110: ln, pos, "eo %s", buf->buf + pos);
3111: return ROFF_IGN;
3112: }
3113:
3114: static enum rofferr
1.164 kristaps 3115: roff_tr(ROFF_ARGS)
3116: {
3117: const char *p, *first, *second;
3118: size_t fsz, ssz;
3119: enum mandoc_esc esc;
3120:
1.238 schwarze 3121: p = buf->buf + pos;
1.164 kristaps 3122:
1.238 schwarze 3123: if (*p == '\0') {
1.260 schwarze 3124: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3125: return ROFF_IGN;
1.164 kristaps 3126: }
3127:
1.238 schwarze 3128: while (*p != '\0') {
1.164 kristaps 3129: fsz = ssz = 1;
3130:
3131: first = p++;
1.238 schwarze 3132: if (*first == '\\') {
1.164 kristaps 3133: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3134: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3135: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3136: ln, (int)(p - buf->buf), first);
1.277 schwarze 3137: return ROFF_IGN;
1.164 kristaps 3138: }
3139: fsz = (size_t)(p - first);
3140: }
3141:
3142: second = p++;
1.238 schwarze 3143: if (*second == '\\') {
1.164 kristaps 3144: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3145: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3146: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3147: ln, (int)(p - buf->buf), second);
1.277 schwarze 3148: return ROFF_IGN;
1.164 kristaps 3149: }
3150: ssz = (size_t)(p - second);
1.238 schwarze 3151: } else if (*second == '\0') {
1.260 schwarze 3152: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3153: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3154: second = " ";
1.165 kristaps 3155: p--;
1.164 kristaps 3156: }
3157:
1.167 kristaps 3158: if (fsz > 1) {
1.207 schwarze 3159: roff_setstrn(&r->xmbtab, first, fsz,
3160: second, ssz, 0);
1.167 kristaps 3161: continue;
3162: }
3163:
1.238 schwarze 3164: if (r->xtab == NULL)
1.207 schwarze 3165: r->xtab = mandoc_calloc(128,
3166: sizeof(struct roffstr));
1.167 kristaps 3167:
3168: free(r->xtab[(int)*first].p);
3169: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3170: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3171: }
3172:
1.277 schwarze 3173: return ROFF_IGN;
1.164 kristaps 3174: }
3175:
3176: static enum rofferr
1.306 schwarze 3177: roff_rn(ROFF_ARGS)
3178: {
3179: const char *value;
3180: char *oldn, *newn, *end;
3181: size_t oldsz, newsz;
1.315 schwarze 3182: int deftype;
1.306 schwarze 3183:
3184: oldn = newn = buf->buf + pos;
3185: if (*oldn == '\0')
3186: return ROFF_IGN;
3187:
3188: oldsz = roff_getname(r, &newn, ln, pos);
3189: if (oldn[oldsz] == '\\' || *newn == '\0')
3190: return ROFF_IGN;
3191:
3192: end = newn;
3193: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3194: if (newsz == 0)
3195: return ROFF_IGN;
3196:
1.315 schwarze 3197: deftype = ROFFDEF_ANY;
3198: value = roff_getstrn(r, oldn, oldsz, &deftype);
3199: switch (deftype) {
3200: case ROFFDEF_USER:
1.306 schwarze 3201: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3202: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3203: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3204: break;
3205: case ROFFDEF_PRE:
3206: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3207: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3208: break;
3209: case ROFFDEF_REN:
1.306 schwarze 3210: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3211: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3212: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3213: break;
3214: case ROFFDEF_STD:
1.306 schwarze 3215: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3216: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3217: break;
3218: default:
3219: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3220: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3221: break;
3222: }
1.306 schwarze 3223: return ROFF_IGN;
3224: }
3225:
3226: static enum rofferr
1.105 kristaps 3227: roff_so(ROFF_ARGS)
3228: {
1.249 schwarze 3229: char *name, *cp;
1.105 kristaps 3230:
1.238 schwarze 3231: name = buf->buf + pos;
1.224 schwarze 3232: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3233:
3234: /*
3235: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3236: * opening anything that's not in our cwd or anything beneath
3237: * it. Thus, explicitly disallow traversing up the file-system
3238: * or using absolute paths.
3239: */
3240:
1.238 schwarze 3241: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3242: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3243: ".so %s", name);
1.249 schwarze 3244: buf->sz = mandoc_asprintf(&cp,
3245: ".sp\nSee the file %s.\n.sp", name) + 1;
3246: free(buf->buf);
3247: buf->buf = cp;
3248: *offs = 0;
1.277 schwarze 3249: return ROFF_REPARSE;
1.105 kristaps 3250: }
3251:
3252: *offs = pos;
1.277 schwarze 3253: return ROFF_SO;
1.105 kristaps 3254: }
1.92 schwarze 3255:
1.266 schwarze 3256: /* --- user defined strings and macros ------------------------------------ */
3257:
1.106 kristaps 3258: static enum rofferr
3259: roff_userdef(ROFF_ARGS)
1.99 kristaps 3260: {
1.311 schwarze 3261: const char *arg[16], *ap;
1.106 kristaps 3262: char *cp, *n1, *n2;
1.292 schwarze 3263: int expand_count, i, ib, ie;
1.263 schwarze 3264: size_t asz, rsz;
1.106 kristaps 3265:
3266: /*
3267: * Collect pointers to macro argument strings
1.188 schwarze 3268: * and NUL-terminate them.
1.106 kristaps 3269: */
1.263 schwarze 3270:
1.273 schwarze 3271: r->argc = 0;
1.238 schwarze 3272: cp = buf->buf + pos;
1.311 schwarze 3273: for (i = 0; i < 16; i++) {
1.273 schwarze 3274: if (*cp == '\0')
3275: arg[i] = "";
3276: else {
3277: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3278: r->argc = i + 1;
3279: }
3280: }
1.99 kristaps 3281:
1.106 kristaps 3282: /*
3283: * Expand macro arguments.
1.99 kristaps 3284: */
1.263 schwarze 3285:
3286: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3287: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3288: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3289: expand_count = 0;
1.263 schwarze 3290: while (*cp != '\0') {
3291:
3292: /* Scan ahead for the next argument invocation. */
3293:
3294: if (*cp++ != '\\')
3295: continue;
3296: if (*cp++ != '$')
3297: continue;
1.274 schwarze 3298: if (*cp == '*') { /* \\$* inserts all arguments */
3299: ib = 0;
3300: ie = r->argc - 1;
3301: } else { /* \\$1 .. \\$9 insert one argument */
3302: ib = ie = *cp - '1';
3303: if (ib < 0 || ib > 8)
3304: continue;
3305: }
1.263 schwarze 3306: cp -= 2;
1.292 schwarze 3307:
3308: /*
3309: * Prevent infinite recursion.
3310: */
3311:
3312: if (cp >= n2)
3313: expand_count = 1;
3314: else if (++expand_count > EXPAND_LIMIT) {
3315: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3316: ln, (int)(cp - n1), NULL);
1.293 schwarze 3317: free(buf->buf);
3318: buf->buf = n1;
1.292 schwarze 3319: return ROFF_IGN;
3320: }
1.263 schwarze 3321:
3322: /*
3323: * Determine the size of the expanded argument,
3324: * taking escaping of quotes into account.
3325: */
3326:
1.274 schwarze 3327: asz = ie > ib ? ie - ib : 0; /* for blanks */
3328: for (i = ib; i <= ie; i++) {
3329: for (ap = arg[i]; *ap != '\0'; ap++) {
3330: asz++;
3331: if (*ap == '"')
3332: asz += 3;
3333: }
1.263 schwarze 3334: }
3335: if (asz != 3) {
3336:
3337: /*
3338: * Determine the size of the rest of the
3339: * unexpanded macro, including the NUL.
3340: */
3341:
3342: rsz = buf->sz - (cp - n1) - 3;
3343:
3344: /*
3345: * When shrinking, move before
3346: * releasing the storage.
3347: */
3348:
3349: if (asz < 3)
3350: memmove(cp + asz, cp + 3, rsz);
3351:
3352: /*
3353: * Resize the storage for the macro
3354: * and readjust the parse pointer.
3355: */
3356:
3357: buf->sz += asz - 3;
3358: n2 = mandoc_realloc(n1, buf->sz);
3359: cp = n2 + (cp - n1);
3360: n1 = n2;
3361:
3362: /*
3363: * When growing, make room
3364: * for the expanded argument.
3365: */
3366:
3367: if (asz > 3)
3368: memmove(cp + asz, cp + 3, rsz);
3369: }
3370:
3371: /* Copy the expanded argument, escaping quotes. */
3372:
3373: n2 = cp;
1.274 schwarze 3374: for (i = ib; i <= ie; i++) {
3375: for (ap = arg[i]; *ap != '\0'; ap++) {
3376: if (*ap == '"') {
3377: memcpy(n2, "\\(dq", 4);
3378: n2 += 4;
3379: } else
3380: *n2++ = *ap;
3381: }
3382: if (i < ie)
3383: *n2++ = ' ';
1.106 kristaps 3384: }
1.99 kristaps 3385: }
3386:
1.106 kristaps 3387: /*
3388: * Replace the macro invocation
3389: * by the expanded macro.
3390: */
1.263 schwarze 3391:
1.238 schwarze 3392: free(buf->buf);
3393: buf->buf = n1;
1.248 schwarze 3394: *offs = 0;
1.106 kristaps 3395:
1.277 schwarze 3396: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3397: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3398: }
1.121 schwarze 3399:
1.306 schwarze 3400: /*
3401: * Calling a high-level macro that was renamed with .rn.
3402: * r->current_string has already been set up by roff_parse().
3403: */
3404: static enum rofferr
3405: roff_renamed(ROFF_ARGS)
3406: {
3407: char *nbuf;
3408:
1.315 schwarze 3409: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3410: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3411: free(buf->buf);
3412: buf->buf = nbuf;
3413: return ROFF_CONT;
3414: }
3415:
1.212 schwarze 3416: static size_t
1.121 schwarze 3417: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3418: {
3419: char *name, *cp;
1.212 schwarze 3420: size_t namesz;
1.121 schwarze 3421:
3422: name = *cpp;
3423: if ('\0' == *name)
1.277 schwarze 3424: return 0;
1.121 schwarze 3425:
1.212 schwarze 3426: /* Read until end of name and terminate it with NUL. */
3427: for (cp = name; 1; cp++) {
3428: if ('\0' == *cp || ' ' == *cp) {
3429: namesz = cp - name;
3430: break;
3431: }
1.121 schwarze 3432: if ('\\' != *cp)
3433: continue;
1.215 schwarze 3434: namesz = cp - name;
3435: if ('{' == cp[1] || '}' == cp[1])
3436: break;
1.121 schwarze 3437: cp++;
3438: if ('\\' == *cp)
3439: continue;
1.224 schwarze 3440: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3441: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3442: mandoc_escape((const char **)&cp, NULL, NULL);
3443: break;
1.121 schwarze 3444: }
3445:
3446: /* Read past spaces. */
3447: while (' ' == *cp)
3448: cp++;
3449:
3450: *cpp = cp;
1.277 schwarze 3451: return namesz;
1.121 schwarze 3452: }
3453:
1.106 kristaps 3454: /*
3455: * Store *string into the user-defined string called *name.
3456: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3457: * append == 0: replace mode
3458: * append == 1: single-line append mode
3459: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3460: */
1.94 kristaps 3461: static void
1.106 kristaps 3462: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3463: int append)
1.92 schwarze 3464: {
1.315 schwarze 3465: size_t namesz;
1.164 kristaps 3466:
1.315 schwarze 3467: namesz = strlen(name);
3468: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3469: string ? strlen(string) : 0, append);
1.315 schwarze 3470: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3471: }
3472:
3473: static void
1.166 kristaps 3474: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3475: const char *string, size_t stringsz, int append)
1.164 kristaps 3476: {
1.166 kristaps 3477: struct roffkv *n;
1.164 kristaps 3478: char *c;
3479: int i;
3480: size_t oldch, newch;
1.92 schwarze 3481:
1.106 kristaps 3482: /* Search for an existing string with the same name. */
1.164 kristaps 3483: n = *r;
3484:
1.211 schwarze 3485: while (n && (namesz != n->key.sz ||
3486: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3487: n = n->next;
1.94 kristaps 3488:
3489: if (NULL == n) {
1.106 kristaps 3490: /* Create a new string table entry. */
1.166 kristaps 3491: n = mandoc_malloc(sizeof(struct roffkv));
3492: n->key.p = mandoc_strndup(name, namesz);
3493: n->key.sz = namesz;
3494: n->val.p = NULL;
3495: n->val.sz = 0;
1.164 kristaps 3496: n->next = *r;
3497: *r = n;
1.193 schwarze 3498: } else if (0 == append) {
1.166 kristaps 3499: free(n->val.p);
3500: n->val.p = NULL;
3501: n->val.sz = 0;
1.106 kristaps 3502: }
3503:
3504: if (NULL == string)
3505: return;
3506:
3507: /*
3508: * One additional byte for the '\n' in multiline mode,
3509: * and one for the terminating '\0'.
3510: */
1.193 schwarze 3511: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3512:
1.166 kristaps 3513: if (NULL == n->val.p) {
3514: n->val.p = mandoc_malloc(newch);
3515: *n->val.p = '\0';
1.106 kristaps 3516: oldch = 0;
3517: } else {
1.166 kristaps 3518: oldch = n->val.sz;
3519: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3520: }
3521:
3522: /* Skip existing content in the destination buffer. */
1.166 kristaps 3523: c = n->val.p + (int)oldch;
1.106 kristaps 3524:
3525: /* Append new content to the destination buffer. */
1.164 kristaps 3526: i = 0;
3527: while (i < (int)stringsz) {
1.106 kristaps 3528: /*
3529: * Rudimentary roff copy mode:
3530: * Handle escaped backslashes.
3531: */
1.164 kristaps 3532: if ('\\' == string[i] && '\\' == string[i + 1])
3533: i++;
3534: *c++ = string[i++];
1.106 kristaps 3535: }
1.94 kristaps 3536:
1.106 kristaps 3537: /* Append terminating bytes. */
1.193 schwarze 3538: if (1 < append)
1.106 kristaps 3539: *c++ = '\n';
1.163 kristaps 3540:
1.106 kristaps 3541: *c = '\0';
1.166 kristaps 3542: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3543: }
3544:
1.94 kristaps 3545: static const char *
1.325 ! schwarze 3546: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3547: int *deftype)
1.92 schwarze 3548: {
1.315 schwarze 3549: const struct roffkv *n;
1.325 ! schwarze 3550: int found, i;
1.315 schwarze 3551: enum roff_tok tok;
3552:
1.325 ! schwarze 3553: found = 0;
! 3554: for (n = r->strtab; n != NULL; n = n->next) {
! 3555: if (strncmp(name, n->key.p, len) != 0 ||
! 3556: n->key.p[len] != '\0' || n->val.p == NULL)
! 3557: continue;
! 3558: if (*deftype & ROFFDEF_USER) {
! 3559: *deftype = ROFFDEF_USER;
! 3560: return n->val.p;
! 3561: } else {
! 3562: found = 1;
! 3563: break;
! 3564: }
! 3565: }
! 3566: for (n = r->rentab; n != NULL; n = n->next) {
! 3567: if (strncmp(name, n->key.p, len) != 0 ||
! 3568: n->key.p[len] != '\0' || n->val.p == NULL)
! 3569: continue;
! 3570: if (*deftype & ROFFDEF_REN) {
! 3571: *deftype = ROFFDEF_REN;
! 3572: return n->val.p;
! 3573: } else {
! 3574: found = 1;
! 3575: break;
1.315 schwarze 3576: }
3577: }
1.325 ! schwarze 3578: for (i = 0; i < PREDEFS_MAX; i++) {
! 3579: if (strncmp(name, predefs[i].name, len) != 0 ||
! 3580: predefs[i].name[len] != '\0')
! 3581: continue;
! 3582: if (*deftype & ROFFDEF_PRE) {
! 3583: *deftype = ROFFDEF_PRE;
! 3584: return predefs[i].str;
! 3585: } else {
! 3586: found = 1;
! 3587: break;
1.315 schwarze 3588: }
3589: }
1.325 ! schwarze 3590: if (r->man->macroset != MACROSET_MAN) {
! 3591: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
! 3592: if (strncmp(name, roff_name[tok], len) != 0 ||
! 3593: roff_name[tok][len] != '\0')
! 3594: continue;
! 3595: if (*deftype & ROFFDEF_STD) {
! 3596: *deftype = ROFFDEF_STD;
! 3597: return NULL;
! 3598: } else {
! 3599: found = 1;
! 3600: break;
1.315 schwarze 3601: }
3602: }
3603: }
1.325 ! schwarze 3604: if (r->man->macroset != MACROSET_MDOC) {
! 3605: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
! 3606: if (strncmp(name, roff_name[tok], len) != 0 ||
! 3607: roff_name[tok][len] != '\0')
! 3608: continue;
! 3609: if (*deftype & ROFFDEF_STD) {
! 3610: *deftype = ROFFDEF_STD;
! 3611: return NULL;
! 3612: } else {
! 3613: found = 1;
! 3614: break;
1.315 schwarze 3615: }
3616: }
1.325 ! schwarze 3617: }
! 3618:
! 3619: if (found == 0 && *deftype != ROFFDEF_ANY) {
! 3620: if (*deftype & ROFFDEF_REN) {
! 3621: /*
! 3622: * This might still be a request,
! 3623: * so do not treat it as undefined yet.
! 3624: */
! 3625: *deftype = ROFFDEF_UNDEF;
! 3626: return NULL;
1.315 schwarze 3627: }
1.325 ! schwarze 3628:
! 3629: /* Using an undefined string defines it to be empty. */
! 3630:
! 3631: roff_setstrn(&r->strtab, name, len, "", 0, 0);
! 3632: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3633: }
1.325 ! schwarze 3634:
1.315 schwarze 3635: *deftype = 0;
1.277 schwarze 3636: return NULL;
1.92 schwarze 3637: }
3638:
1.94 kristaps 3639: static void
1.167 kristaps 3640: roff_freestr(struct roffkv *r)
1.92 schwarze 3641: {
1.166 kristaps 3642: struct roffkv *n, *nn;
1.92 schwarze 3643:
1.167 kristaps 3644: for (n = r; n; n = nn) {
1.166 kristaps 3645: free(n->key.p);
3646: free(n->val.p);
1.92 schwarze 3647: nn = n->next;
3648: free(n);
3649: }
1.114 kristaps 3650: }
1.266 schwarze 3651:
3652: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3653:
3654: /*
3655: * Duplicate an input string, making the appropriate character
3656: * conversations (as stipulated by `tr') along the way.
3657: * Returns a heap-allocated string with all the replacements made.
3658: */
3659: char *
3660: roff_strdup(const struct roff *r, const char *p)
3661: {
1.166 kristaps 3662: const struct roffkv *cp;
1.164 kristaps 3663: char *res;
3664: const char *pp;
3665: size_t ssz, sz;
3666: enum mandoc_esc esc;
3667:
1.167 kristaps 3668: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3669: return mandoc_strdup(p);
1.164 kristaps 3670: else if ('\0' == *p)
1.277 schwarze 3671: return mandoc_strdup("");
1.164 kristaps 3672:
3673: /*
3674: * Step through each character looking for term matches
3675: * (remember that a `tr' can be invoked with an escape, which is
3676: * a glyph but the escape is multi-character).
3677: * We only do this if the character hash has been initialised
3678: * and the string is >0 length.
3679: */
3680:
3681: res = NULL;
3682: ssz = 0;
3683:
3684: while ('\0' != *p) {
1.289 schwarze 3685: assert((unsigned int)*p < 128);
3686: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3687: sz = r->xtab[(int)*p].sz;
3688: res = mandoc_realloc(res, ssz + sz + 1);
3689: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3690: ssz += sz;
3691: p++;
3692: continue;
3693: } else if ('\\' != *p) {
3694: res = mandoc_realloc(res, ssz + 2);
3695: res[ssz++] = *p++;
3696: continue;
3697: }
3698:
1.164 kristaps 3699: /* Search for term matches. */
1.167 kristaps 3700: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3701: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3702: break;
3703:
3704: if (NULL != cp) {
3705: /*
3706: * A match has been found.
3707: * Append the match to the array and move
3708: * forward by its keysize.
3709: */
1.207 schwarze 3710: res = mandoc_realloc(res,
3711: ssz + cp->val.sz + 1);
1.166 kristaps 3712: memcpy(res + ssz, cp->val.p, cp->val.sz);
3713: ssz += cp->val.sz;
3714: p += (int)cp->key.sz;
1.164 kristaps 3715: continue;
3716: }
3717:
1.167 kristaps 3718: /*
3719: * Handle escapes carefully: we need to copy
3720: * over just the escape itself, or else we might
3721: * do replacements within the escape itself.
3722: * Make sure to pass along the bogus string.
3723: */
3724: pp = p++;
3725: esc = mandoc_escape(&p, NULL, NULL);
3726: if (ESCAPE_ERROR == esc) {
3727: sz = strlen(pp);
1.164 kristaps 3728: res = mandoc_realloc(res, ssz + sz + 1);
3729: memcpy(res + ssz, pp, sz);
1.167 kristaps 3730: break;
1.164 kristaps 3731: }
1.207 schwarze 3732: /*
3733: * We bail out on bad escapes.
1.167 kristaps 3734: * No need to warn: we already did so when
3735: * roff_res() was called.
3736: */
3737: sz = (int)(p - pp);
3738: res = mandoc_realloc(res, ssz + sz + 1);
3739: memcpy(res + ssz, pp, sz);
3740: ssz += sz;
1.164 kristaps 3741: }
3742:
3743: res[(int)ssz] = '\0';
1.277 schwarze 3744: return res;
1.227 schwarze 3745: }
3746:
3747: int
3748: roff_getformat(const struct roff *r)
3749: {
3750:
1.277 schwarze 3751: return r->format;
1.174 kristaps 3752: }
3753:
3754: /*
1.207 schwarze 3755: * Find out whether a line is a macro line or not.
1.174 kristaps 3756: * If it is, adjust the current position and return one; if it isn't,
3757: * return zero and don't change the current position.
3758: * If the control character has been set with `.cc', then let that grain
3759: * precedence.
3760: * This is slighly contrary to groff, where using the non-breaking
3761: * control character when `cc' has been invoked will cause the
3762: * non-breaking macro contents to be printed verbatim.
3763: */
3764: int
3765: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3766: {
3767: int pos;
3768:
3769: pos = *ppos;
3770:
1.303 schwarze 3771: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3772: pos++;
1.303 schwarze 3773: else if (r->control != '\0')
1.277 schwarze 3774: return 0;
1.174 kristaps 3775: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3776: pos += 2;
3777: else if ('.' == cp[pos] || '\'' == cp[pos])
3778: pos++;
3779: else
1.277 schwarze 3780: return 0;
1.174 kristaps 3781:
3782: while (' ' == cp[pos] || '\t' == cp[pos])
3783: pos++;
3784:
3785: *ppos = pos;
1.277 schwarze 3786: return 1;
1.74 kristaps 3787: }
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